GNU C Library Buffer Overflow Vulnerability

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

cat cve-2023-4911.json

Vendor: GNU
Product: GNU C Library
CVSS: 7.8
EPSS (exploit probability): 81.4%
Status: kev
CISA patch-by (BOD 22-01): December 12, 2023
Published: November 21, 2023
Source: https://nvd.nist.gov/vuln/detail/CVE-2023-4911

GNU C Library’s dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

Added to CISA’s Known Exploited Vulnerabilities catalog on 2023-11-21. Required action per CISA: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Due date: 2023-12-12.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.