Off-by-one in Glibc - CVE-2023-6779

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Main Vulnerability Database Vulnerabilities #VU85934

Off-by-one in Glibc - CVE-2023-6779

Published: January 31, 2024


Vulnerability identifier: #VU85934
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-6779
CWE-ID: CWE-193
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Glibc
Software vendor:
GNU

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an off-by-one error within the __vsyslog_internal() function. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.


Remediation

Install updates from vendor's website.

External links