CVE-2023-4911

CVE Details

Release Date:	2023-10-03
Impact:	Important	What is this?

Description

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

See more information about CVE-2023-4911 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (glibc)	ELSA-2023-12851	2023-10-05
Oracle Linux version 8 (glibc)	ELSA-2023-12853	2023-10-09
Oracle Linux version 8 (glibc)	ELSA-2023-12872	2023-10-12
Oracle Linux version 8 (glibc)	ELSA-2023-5455	2023-12-19
Oracle Linux version 9 (glibc)	ELSA-2023-12850	2023-10-05
Oracle Linux version 9 (glibc)	ELSA-2023-12854	2023-10-06
Oracle Linux version 9 (glibc)	ELSA-2023-12873	2023-10-12
Oracle Linux version 9 (glibc)	ELSA-2023-5453	2023-10-10