CVE-2023-4911

high

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2238352

https://access.redhat.com/security/cve/CVE-2023-4911

https://access.redhat.com/errata/RHSA-2024:0033

https://access.redhat.com/errata/RHSA-2023:5476

https://access.redhat.com/errata/RHSA-2023:5455

https://access.redhat.com/errata/RHSA-2023:5454

https://access.redhat.com/errata/RHSA-2023:5453

Details

Source: Mitre, NVD

Published: 2023-10-03

Updated: 2024-09-17

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High