CVE-2020-3535
Vulnerability Scoring
Attack Complexity Details
- Attack Complexity: Low Impact
- Attack Vector: LOCAL
- Privileges Required: None
- Scope: UNCHANGED
- User Interaction: NONE
CIA Impact Definition
- Confidentiality: HIGH IMPACT
- Integrity: HIGH IMPACT
- Availability: HIGH IMPACT
CVE-2020-3535 Vulnerability Summary
A vulnerability in the loading mechanism of specific DLLs in the Cisco Webex Teams client for Windows could allow an authenticated, local attacker to load a malicious library. To exploit this vulnerability, the attacker needs valid credentials on the Windows system. The vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by placing a malicious DLL file in a specific location on the targeted system. This file will execute when the vulnerable application launches. A successful exploit could allow the attacker to execute arbitrary code on the targeted system with the privileges of another user’s account.
Access Complexity Graph for CVE-2020-3535
Impact Analysis for CVE-2020-3535
CVE-2020-3535: Detailed Information and External References
EPSS
0.00081
EPSS %
0.37193
References
0.00081
CWE
CWE-427
CAPEC
0.00081
- Leveraging/Manipulating Configuration File Search Paths: This pattern of attack sees an adversary load a malicious resource into a program's standard path so that when a known command is executed then the system instead executes the malicious component. The adversary can either modify the search path a program uses, like a PATH variable or classpath, or they can manipulate resources on the path to point to their malicious components. J2EE applications and other component based applications that are built from multiple binaries can have very long list of dependencies to execute. If one of these libraries and/or references is controllable by the attacker then application controls can be circumvented by the attacker.
- Search Order Hijacking: An adversary exploits a weakness in an application's specification of external libraries to exploit the functionality of the loader where the process loading the library searches first in the same directory in which the process binary resides and then in other directories. Exploitation of this preferential search order can allow an attacker to make the loading process load the adversary's rogue library rather than the legitimate library. This attack can be leveraged with many different libraries and with many different loading processes. No forensic trails are left in the system's registry or file system that an incorrect library had been loaded.
Vulnerable Configurations
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cpe:2.3:a:cisco:webex_teams:3.0.14234:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:3.0.14234:*:*:*:*:*:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.14741.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.14741.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.14866.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.14866.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15015.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15015.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15036.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15036.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15092.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15092.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15131.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15131.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15164.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15164.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15221.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15221.0:*:*:*:*:windows:*:*
-
cpe:2.3:a:cisco:webex_teams:3.0.15333.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15333.0:*:*:*:*:windows:*:*
-
cpe:2.3:a:cisco:webex_teams:3.0.15410.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15410.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15485.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15485.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15645.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15645.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.15711.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.15711.0:*:*:*:*:windows:*:*
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cpe:2.3:a:cisco:webex_teams:3.0.16040.0:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:webex_teams:3.0.16040.0:*:*:*:*:windows:*:*
CVSS3 Source
nvd@nist.gov
CVSS3 Type
Primary
CVSS3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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