Cisco ASA SSH RCE: Authenticated User Gains Root Privileges
CVE-2024-20329 Published on October 23, 2024

Cisco Adaptive Security Appliance Software Remote Command Injection Vulnerability
A vulnerability in the SSH subsystem of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to execute operating system commands as root. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by submitting crafted input when executing remote CLI commands over SSH. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges. An attacker with limited user privileges could use this vulnerability to gain complete control over the system.

NVD

Vulnerability Analysis

CVE-2024-20329 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Improper Neutralization of Expression/Command Delimiters

The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as expression or command delimiters when they are sent to a downstream component. As data is parsed, an injected/absent/malformed delimiter may cause the process to take unexpected actions.


Products Associated with CVE-2024-20329

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Cisco Adaptive Security Appliance Software
 
Cisco Adaptive Security Appliance
 

Affected Versions

Cisco Adaptive Security Appliance (ASA) Software: cisco adaptive_security_appliance_software:

Exploit Probability

EPSS
1.92%
Percentile
83.13%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.