linksys CVE Vulnerabilities & Metrics

A vulnerability was found in Linksys WRT54G 4.21.5. It has been rated as critical. Affected by this issue is the function validate_services_port of the file /apply.cgi of the component POST Parameter Handler. The manipulation of the argument services_array leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A Command Injection vulnerability exists in the do_upgrade_post function of the httpd binary in Linksys E1500 v1.0.06.001. As a result, an authenticated attacker can execute OS commands with root privileges.

Insecure permissions in Linksys Velop WiFi 5 (WHW01v1) 1.1.13.202617 allows attackers to escalate privileges from Guest to root.

A vulnerability was found in Linksys WRT54GL 4.30.18. It has been declared as problematic. This vulnerability affects unknown code of the file /SysInfo1.htm of the component Web Management Interface. The manipulation leads to information disclosure. The exploit has been disclosed to the public and may be used. VDB-253330 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Linksys WRT54GL 4.30.18. It has been classified as problematic. This affects an unknown part of the file /wlaninfo.htm of the component Web Management Interface. The manipulation leads to information disclosure. The exploit has been disclosed to the public and may be used. The identifier VDB-253329 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Linksys WRT54GL 4.30.18 and classified as problematic. Affected by this issue is some unknown functionality of the file /SysInfo.htm of the component Web Management Interface. The manipulation leads to information disclosure. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-253328. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

There is a command injection vulnerability in the Linksys E2000 router with firmware version 1.0.06. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ssid, wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

There is a command injection vulnerability in the Linksys E2000 router with firmware version 1.0.06. If an attacker gains web management privileges, they can inject commands into the post request parameters WL_atten_bb, WL_atten_radio, and WL_atten_ctl in the apply.cgi interface, thereby gaining shell privileges.

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

Linksys AX3200 1.1.00 is vulnerable to OS command injection by authenticated users via shell metacharacters to the diagnostics traceroute page.

An arbitrary code execution vulnerability exisits in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. The Check_TSSI function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious POST request to /apply.cgi to execute arbitrary commands on the underlying Linux operating system as root.

A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.

An arbitrary code exection vulnerability exists in Linksys WUMC710 Wireless-AC Universal Media Connector with firmware <= 1.0.02 (build3). The do_setNTP function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious GET or POST request to /setNTP.cgi to execute arbitrary commands on the underlying Linux operating system as root.

A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. This vulnerablity can be triggered over the network via a malicious POST request to /apply.cgi.

On Linksys E5350 WiFi Router with firmware version 1.0.00.037 and lower, (and potentially other vendors/devices due to code reuse), the /SysInfo.htm URI does not require a session ID. This web page calls a show_sysinfo function which retrieves WPA passwords, SSIDs, MAC Addresses, serial numbers, WPS Pins, and hardware/firmware versions, and prints this information into the web page. This web page is visible when remote management is enabled. A user who has access to the web interface of the device can extract these secrets. If the device has remote management enabled and is connected directly to the internet, this vulnerability is exploitable over the internet without interaction.

Linksys E1200 v1.0.04 is vulnerable to Buffer Overflow via ej_get_web_page_name.

Command injection vulnerability in Linksys MR8300 router while Registration to DDNS Service. By specifying username and password, an attacker connected to the router's web interface can execute arbitrary OS commands. The username and password fields are not sanitized correctly and are used as URL construction arguments, allowing URL redirection to an arbitrary server, downloading an arbitrary script file, and eventually executing the file in the device. This issue affects: Linksys MR8300 Router 1.0.

Linksys MR9600 devices before 2.0.5 allow attackers to read arbitrary files via a symbolic link to the root directory of a NAS SMB share.

Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote attackers to cause a persistent denial of service (segmentation fault) via a long /goform/langSwitch langSelectionOnly parameter.

Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote authenticated users to execute arbitrary commands via shell metacharacters in a filename to the upload_settings.cgi page.

Belkin LINKSYS RE6500 devices before 1.0.11.001 allow remote authenticated users to execute arbitrary commands via goform/systemCommand?command= in conjunction with the goform/pingstart program.

Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote attackers to execute arbitrary commands or set a new password via shell metacharacters to the goform/setSysAdm page.

The SIP implementation on the Linksys SPA2102 phone adapter provides hashed credentials in a response to an invalid authentication challenge, which makes it easier for remote attackers to obtain access via a brute-force attack, related to a "SIP Digest Leak" issue.

Linksys WRT310Nv2 2.0.0.1 is vulnerable to XSS.

Belkin Linksys Velop 1.1.8.192419 devices allows remote attackers to discover the recovery key via a direct request for the /sysinfo_json.cgi URI.

Linksys EA6500 has SMB Symlink Traversal allowing symbolic links to be created to locations outside of the Samba share.

Unsanitized user input in the web interface for Linksys WiFi extender products (RE6400 and RE6300 through 1.2.04.022) allows for remote command execution. An attacker can access system OS configurations and commands that are not intended for use beyond the web UI.

An issue was discovered on Linksys WRT1900ACS 1.0.3.187766 devices. An ability exists for an unauthenticated user to browse a confidential ui/1.0.99.187766/dynamic/js/setup.js.localized file on the router's webserver, allowing for an attacker to identify possible passwords that the system uses to set the default guest network password. An attacker can use this list of 30 words along with a random 2 digit number to brute force their access onto a router's guest network.

On Linksys WAG54G2 1.00.10 devices, there is authenticated command injection via shell metacharacters in the setup.cgi c4_ping_ipaddr variable.

An issue was discovered on Linksys WRT1900ACS 1.0.3.187766 devices. A lack of encryption in how the user login cookie (admin-auth) is stored on a victim's computer results in the admin password being discoverable by a local attacker, and usable to gain administrative access to the victim's router. The admin password is stored in base64 cleartext in an "admin-auth" cookie. An attacker sniffing the network at the time of login could acquire the router's admin password. Alternatively, gaining physical access to the victim's computer soon after an administrative login could result in compromise.

An exploitable operating system command injection exists in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04). Specially crafted entries to network configuration information can cause execution of arbitrary system commands, resulting in full control of the device. An attacker can send an authenticated HTTP request to trigger this vulnerability. Data entered into the 'Domain Name' input field through the web portal is submitted to apply.cgi as the value to the 'wan_domain' POST parameter. The wan_domain data goes through the nvram_set process described above. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.

Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAMData entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.

Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAM. Data entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal, it enters a code path that continues until it reaches offset 0x0042B5C4 in the 'start_lltd' function. Within the 'start_lltd' function, a 'nvram_get' call is used to obtain the value of the user-controlled 'machine_name' NVRAM entry. This value is then entered directly into a command intended to write the host name to a file and subsequently executed.

Linksys Velop 1.1.2.187020 devices allow unauthenticated command injection, providing an attacker with full root access, via cgi-bin/zbtest.cgi or cgi-bin/zbtest2.cgi (scripts that can be discovered with binwalk on the firmware, but are not visible in the web interface). This occurs because shell metacharacters in the query string are mishandled by ShellExecute, as demonstrated by the zbtest.cgi?cmd=level&level= substring. This can also be exploited via CSRF.

Cross-Site Request Forgery (CSRF) exists on Linksys EA4500 devices with Firmware Version before 2.1.41.164606, as demonstrated by a request to apply.cgi to disable SIP.

Linksys SMART WiFi firmware on EA2700 and EA3500 devices; before 2.1.41 build 162351 on E4200v2 and EA4500 devices; before 1.1.41 build 162599 on EA6200 devices; before 1.1.40 build 160989 on EA6300, EA6400, EA6500, and EA6700 devices; and before 1.1.42 build 161129 on EA6900 devices allows remote attackers to obtain sensitive information or modify data via a JNAP action in a JNAP/ HTTP request.

Linksys SMART WiFi firmware on EA2700 and EA3500 devices; before 2.1.41 build 162351 on E4200v2 and EA4500 devices; before 1.1.41 build 162599 on EA6200 devices; before 1.1.40 build 160989 on EA6300, EA6400, EA6500, and EA6700 devices; and before 1.1.42 build 161129 on EA6900 devices allows remote attackers to obtain the administrator's MD5 password hash via a direct request for the /.htpasswd URI.

Linksys EA6500 with firmware 1.1.28.147876 does not properly restrict access, which allows remote attackers to obtain sensitive information (clients and router configuration) via a request to /JNAP/.

Cross-site scripting (XSS) vulnerability in the Parental Controls section in Linksys EA6500 with firmware 1.1.28.147876 allows remote authenticated users to inject arbitrary web script or HTML via vectors related to the Blocked Specific Sites section.

Open redirect vulnerability in ui/dynamic/unsecured.html in Linksys EA6500 with firmware 1.1.28.147876 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the target parameter.

The UPnP IGD implementation on the Cisco Linksys WRT54GX with firmware 2.00.05, when UPnP is enabled, configures the SOAP server to listen on the WAN port, which allows remote attackers to administer the firewall via SOAP requests.

The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5, WRT54GS v1 through v3 with firmware before 4.71.1, and WRT54GS v4 with firmware before 1.06.1 allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an "external forwarding" vulnerability.

Linksys WAP54Gv3 firmware 3.04.03 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) data2 and (2) data3 parameters to (a) Debug_command_page.asp and (b) debug.cgi.

Multiple buffer overflows in the Marvell wireless driver, as used in Linksys WAP4400N Wi-Fi access point with firmware 1.2.17 on the Marvell 88W8361P-BEM1 chipset, and other products, allow remote 802.11-authenticated users to cause a denial of service (wireless access point crash) and possibly execute arbitrary code via an association request with long (1) rates, (2) extended rates, and unspecified other information elements.

Buffer overflow on the Linksys WRT54GL wireless router allows remote attackers to execute arbitrary code via unspecified vectors, as demonstrated by a certain module in VulnDisco Pack Professional 8.10 through 8.11. NOTE: as of 20090917, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.

Unspecified vulnerability in the SNMPv3 component in Linksys WAP4400N firmware 1.2.14 on the Marvell Semiconductor 88W8361P-BEM1 chipset has unknown impact and attack vectors, probably remote.

The Marvell driver for the Linksys WAP4400N Wi-Fi access point with firmware 1.2.14 on the Marvell 88W8361P-BEM1 chipset, when WEP mode is enabled, does not properly parse malformed 802.11 frames, which allows remote attackers to cause a denial of service (reboot or hang-up) via a malformed association request containing the WEP flag, as demonstrated by a request that is too short, a different vulnerability than CVE-2008-1144 and CVE-2008-1197.

The driver for the Linksys WRT350N Wi-Fi access point with firmware 2.00.17 on the Atheros AR5416-AC1E chipset does not properly parse the Atheros vendor-specific information element in an association request, which allows remote authenticated users to cause a denial of service (device reboot or hang) or possibly execute arbitrary code via an Atheros information element with an invalid length, as demonstrated by an element that is too long.

Linksys SPA-2102 Phone Adapter 3.3.6 allows remote attackers to cause a denial of service (crash) via a long ping packet ("ping of death"). NOTE: the severity of this issue has been disputed since there are limited attack scenarios.

The Cisco Linksys WAG54GS Wireless-G ADSL Gateway with 1.01.03 and earlier firmware has "admin" as its default password for the "admin" account, which makes it easier for remote attackers to obtain access.

Multiple cross-site scripting (XSS) vulnerabilities on the Cisco Linksys WAG54GS Wireless-G ADSL Gateway with 1.01.03 and earlier firmware allow remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different issue than CVE-2007-3574.

Multiple cross-site request forgery (CSRF) vulnerabilities on the Cisco Linksys WAG54GS Wireless-G ADSL Gateway with 1.01.03 and earlier firmware allow remote attackers to perform actions as administrators via an arbitrary valid request to an administrative URI, as demonstrated by (1) a Restore Factory Defaults action using the mtenRestore parameter to setup.cgi and (2) creation of a user account using the sysname parameter to setup.cgi.

The web interface on the Linksys WRT54g router with firmware 1.00.9 does not require credentials when invoking scripts, which allows remote attackers to perform arbitrary administrative actions via a direct request to (1) Advanced.tri, (2) AdvRoute.tri, (3) Basic.tri, (4) ctlog.tri, (5) ddns.tri, (6) dmz.tri, (7) factdefa.tri, (8) filter.tri, (9) fw.tri, (10) manage.tri, (11) ping.tri, (12) PortRange.tri, (13) ptrigger.tri, (14) qos.tri, (15) rstatus.tri, (16) tracert.tri, (17) vpn.tri, (18) WanMac.tri, (19) WBasic.tri, or (20) WFilter.tri. NOTE: the Security.tri vector is already covered by CVE-2006-5202.

The FTP server on the Linksys WRT54G 7 router with 7.00.1 firmware does not verify authentication credentials, which allows remote attackers to establish an FTP session by sending an arbitrary username and password.

The Linksys WRT54G router allows remote attackers to cause a denial of service (device restart) via a long username and password to the FTP interface.

The Linksys WRT54G router has "admin" as its default FTP password, which allows remote attackers to access sensitive files including nvram.cfg, a file that lists all HTML documents, and an ELF executable file.

Cross-site scripting (XSS) vulnerability on the Linksys WRT300N router with firmware 2.00.20, when Mozilla Firefox or Apple Safari is used, allows remote attackers to inject arbitrary web script or HTML via the dyndns_domain parameter to the default URI.

The Linksys WRT54G router stores passwords and keys in cleartext in the Config.bin file, which might allow remote authenticated users to obtain sensitive information via an HTTP request for the top-level Config.bin URI.

Cross-site request forgery (CSRF) vulnerability in apply.cgi in the Linksys WRT54GL Wireless-G Broadband Router with firmware 4.30.9 allows remote attackers to perform actions as administrators.

Cross-site scripting (XSS) vulnerability in the Linksys SPA941 VoIP Phone with firmware 5.1.8 allows remote attackers to inject arbitrary web script or HTML via the From header in a SIP message.

Multiple cross-site scripting (XSS) vulnerabilities in setup.cgi on the Cisco Linksys WAG54GS Wireless-G ADSL Gateway with 1.00.06 firmware allow remote attackers to inject arbitrary web script or HTML via the (1) c4_trap_ip_, (2) devname, (3) snmp_getcomm, or (4) snmp_setcomm parameter.

The Linksys SPA941 VoIP Phone allows remote attackers to cause a denial of service (device reboot) via a 0377 (0xff) character in the From header, and possibly certain other locations, in a SIP INVITE request.

The Linksys WAG200G with firmware 1.01.01, WRT54GC 2 with firmware 1.00.7, and WRT54GC 1 with firmware 1.03.0 and earlier allow remote attackers to obtain sensitive information (passwords and configuration data) via a packet to UDP port 916. NOTE: some of these details are obtained from third party information.

The HTTP server in Linksys SPA-921 VoIP Desktop Phone allows remote attackers to cause a denial of service (reboot) via (1) a long URL, or a long (2) username or (3) password during Basic Authentication.

PhoneCtrl.exe in Linksys WIP 330 Wireless-G IP Phone 1.00.06A allows remote attackers to cause a denial of service (crash) via a TCP SYN scan, as demonstrated using TCP ports 1-65535 with nmap.

Stack-based buffer overflow in the Broadcom BCMWL5.SYS wireless device driver 3.50.21.10, as used in Cisco Linksys WPC300N Wireless-N Notebook Adapter before 4.100.15.5 and other products, allows remote attackers to execute arbitrary code via an 802.11 response frame containing a long SSID field.

Linksys WRT54g firmware 1.00.9 does not require credentials when making configuration changes, which allows remote attackers to modify arbitrary configurations via a direct request to Security.tri, as demonstrated using the SecurityMode and layout parameters, a different issue than CVE-2006-2559.

Linksys WRT54G Wireless-G Broadband Router allows remote attackers to bypass access restrictions and conduct unauthorized operations via a UPnP request with a modified InternalClient parameter, which is not validated, as demonstrated by using AddPortMapping to forward arbitrary traffic.

Multiple unspecified vulnerabilities in Linksys RT31P2 VoIP router allow remote attackers to cause a denial of service via malformed Session Initiation Protocol (SIP) messages.

Linksys WRT54G routers version 5 (running VXWorks) allow remote attackers to cause a denial of service by sending a malformed DCC SEND string to an IRC channel, which causes an IRC connection reset, possibly related to the masquerading code for NAT environments, and as demonstrated via (1) a DCC SEND with a single long argument, or (2) a DCC SEND with IP, port, and filesize arguments with a 0 value.

Linksys BEFVP41 VPN Router 2.0 with firmware 1.01.04 allows remote attackers on the local network, to cause a denial of service via IP packets with a null IP option length.

Linksys WRT54GS and BEFW11S4 allows remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LAND). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.

Buffer overflow in apply.cgi in Linksys WRT54G 3.01.03, 3.03.6, and possibly other versions before 4.20.7, allows remote attackers to execute arbitrary code via a long HTTP POST request.

ezconfig.asp in Linksys WRT54G router 3.01.03, 3.03.6, non-default configurations of 2.04.4, and possibly other versions, does not use an authentication initialization function, which allows remote attackers to obtain encrypted configuration information and, if the key is known, modify the configuration.

Linksys WRT54G router allows remote attackers to cause a denial of service (CPU consumption and server hang) via an HTTP POST request with a negative Content-Length value.

ezconfig.asp in Linksys WRT54G router 3.01.03, 3.03.6, non-default configurations of 2.04.4, and possibly other versions, uses weak encryption (XOR encoding with a fixed byte mask) for configuration information, which could allow attackers to decrypt the information and possibly re-encrypt it in conjunction with CVE-2005-2914.

Linksys WRT54G 3.01.03, 3.03.6, 4.00.7, and possibly other versions before 4.20.7, does not verify user authentication until after an HTTP POST request has been processed, which allows remote attackers to (1) modify configuration using restore.cgi or (2) upload new firmware using upgrade.cgi.

Unknown vulnerability in Linksys WRT54GS wireless router with firmware 4.50.6, with WPA Personal/TKIP authentication enabled, allows remote clients to bypass authentication by connecting without using encryption.

Linksys WRT54G router uses the same private key and certificate for every router, which allows remote attackers to sniff the SSL connection and obtain sensitive information.

Linksys PSUS4 running firmware 6032 allows remote attackers to cause a denial of service (device crash) via an HTTP POST request containing an unknown parameter without a value.

Linksys WET11 1.5.4 allows remote attackers to change the password without providing the original password via the data parameter to changepw.html.

The Web interface in Linksys WRT54G 2.02.7 and BEFSR41 version 3, with the firewall disabled, allows remote attackers to attempt to login to an administration web page, even when the configuration specifies that remote administration is disabled.

Absolute path traversal vulnerability in main.cgi in Linksys WVC11B Wireless-B Internet Video Camera allows remote attackers to read arbitrary files via an absolute pathname in the next_file parameter.

Cross-site scripting (XSS) vulnerability in main.cgi in Linksys WVC11B Wireless-B Internet Video Camera allows remote attackers to inject arbitrary web script or HTML via the next_file parameter.

Linksys WAP55AG 1.07 allows remote attackers with access to an SNMP read only community string to gain access to read/write communtiy strings via a query for OID 1.3.6.1.4.1.3955.2.1.13.1.2.

DHCP on Linksys BEFSR11, BEFSR41, BEFSR81, and BEFSRU31 Cable/DSL Routers, firmware version 1.45.7, does not properly clear previously used buffer contents in a BOOTP reply packet, which allows remote attackers to obtain sensitive information.

Buffer overflow in the system log viewer of Linksys BEFSX41 1.44.3 allows remote attackers to cause a denial of service via an HTTP request with a long Log_Page_Num variable.

Linksys EtherFast Cable/DSL BEFSR11, BEFSR41 and BEFSRU31 with the firmware 1.42.7 upgrade installed opens TCP port 5678 for remote administration even when the "Block WAN" and "Remote Admin" options are disabled, which allows remote attackers to gain access.

Linksys WET11 firmware 1.31 and 1.32 allows remote attackers to cause a denial of service (crash) via a packet containing the device's hardware address as the source MAC address in the DLC header.

Buffer overflow in the Embedded HTTP server, as used in (1) D-Link DI-804 4.68, Dl-704 V2.56b6, and Dl-704 V2.56b5 and (2) Linksys Etherfast BEFW11S4 Wireless AP + Cable/DSL Router 1.37.2 through 1.42.7 and Linksys WAP11 1.3 and 1.4, allows remote attackers to cause a denial of service (crash) via a long header, as demonstrated using the Host header.

GlobalSunTech Wireless Access Points (1) WISECOM GL2422AP-0T, and possibly OEM products such as (2) D-Link DWL-900AP+ B1 2.1 and 2.2, (3) ALLOY GL-2422AP-S, (4) EUSSO GL2422-AP, and (5) LINKSYS WAP11-V2.2, allow remote attackers to obtain sensitive information like WEP keys, the administrator password, and the MAC filter via a "getsearch" request to UDP port 27155.

Buffer overflow in the Web management interface in Linksys BEFW11S4 wireless access point router 2 and BEFSR11, BEFSR41, and BEFSRU31 EtherFast Cable/DSL routers with firmware before 1.43.3 with remote management enabled allows remote attackers to cause a denial of service (router crash) via a long password.

The remote management web server for Linksys BEFSR41 EtherFast Cable/DSL Router before firmware 1.42.7 allows remote attackers to cause a denial of service (crash) via an HTTP request to Gozila.cgi without any arguments.

VPN Server module in Linksys EtherFast BEFVP41 Cable/DSL VPN Router before 1.40.1 reduces the key lengths for keys that are supplied via manual key entry, which makes it easier for attackers to crack the keys.

Linksys EtherFast BEFN2PS4, BEFSR41, and BEFSR81 Routers, and possibly other products, allow remote attackers to gain sensitive information and cause a denial of service via an SNMP query for the default community string "public," which causes the router to change its configuration and send SNMP trap information back to the system that initiated the query.

Atmel Firmware 1.3 Wireless Access Point (WAP) allows remote attackers to cause a denial of service via a SNMP request with (1) a community string other than "public" or (2) an unknown OID, which causes the WAP to deny subsequent SNMP requests.

LinkSys EtherFast BEFSR41 Cable/DSL routers running firmware before 1.39.3 Beta allows a remote attacker to view administration and user passwords by connecting to the router and viewing the HTML source for (1) index.htm and (2) Password.htm.

SNMP service in Atmel 802.11b VNET-B Access Point 1.3 and earlier, as used in Netgear ME102 and Linksys WAP11, accepts arbitrary community strings with requested MIB modifications, which allows remote attackers to obtain sensitive information such as WEP keys, cause a denial of service, or gain access to the network.