CVE-2020-24580: Vulnerability Analysis & Exploit Details

CVE-2020-24580 Vulnerability Summary

An issue was discovered on D-Link DSL-2888A devices with firmware prior to AU_2.31_V1.1.47ae55. Lack of authentication functionality allows an attacker to assign a static IP address that was once used by a valid user.

CVE-2020-24580: Detailed Information and External References

EPSS

0.00073

EPSS %

0.34391

References

0.00073

• https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/d-link-multiple-security-vulnerabilities-leading-to-rce/
• https://www.trustwave.com/en-us/resources/security-resources/security-advisories/

CWE

CWE-306

CAPEC

0.00073

• Choosing Message Identifier: This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
• Force the System to Reset Values: An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.
• Communication Channel Manipulation: An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.
• Using Unpublished Interfaces or Functionality: An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.
• Cross Site Request Forgery: An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

Vulnerable Configurations

• cpe:2.3:h:dlink:dsl2888a:-:*:*:*:*:*:*:*
  cpe:2.3:h:dlink:dsl2888a:-:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H