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Home Alerts

WallEscape Vulnerability Leaks Passwords

April 2, 2024
Reading Time: 2 mins read
in Alerts
WallEscape Vulnerability Leaks Passwords

A critical vulnerability dubbed ‘WallEscape’ has been discovered within the util-linux core utilities package in Linux systems, raising concerns about user password security. Security researchers have identified that this flaw, tracked as CVE-2024-28085, allows attackers to exploit the ‘wall’ command, enabling them to embed crafted messages and execute malicious actions. One researcher, Skyler Ferrante, highlighted that this vulnerability could lead to the leakage of user passwords, particularly on Ubuntu 22.04 systems with default configurations where the ‘wall’ command is installed with special setgid permissions and mesg is set to y.

Moreover, Ferrante emphasized that the flaw could have serious implications beyond password leakage, including the potential modification of the clipboard content, especially on systems allowing wall messages. The vulnerability, introduced in 2013, impacts all util-linux releases prior to version 2.40, necessitating immediate attention and patching to mitigate the associated risks. Notably, while Debian Bookworm is affected, CentOS and Red Hat products remain unaffected by this vulnerability.

Researchers have provided proof-of-concept (PoC) code, underlining the urgency for system administrators to address this vulnerability promptly. The potential for attackers to exploit this flaw to manipulate password prompts and gain unauthorized access underscores the importance of vigilance in maintaining system security. Security advisories from both researchers and organizations like NIST NVD highlight the severity of this vulnerability, indicating plausible scenarios where it could lead to account takeover if left unaddressed.

Reference:
  • ‘WallEscape’ Linux Vulnerability Exposes User Passwords to Attackers

Tags: April 2024Cyber AlertCyber Alerts 2024Cyber RiskCyber threatLinuxSkyler FerranteWallEscape
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