CVE-2023-4911

7.8 HIGH CISA KEV - Actively Exploited
Published: October 03, 2023 Modified: November 06, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/errata/RHBA-2024:2413
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5453
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5454
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5455
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5476
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0033
Source: secalert@redhat.com
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4911
Source: secalert@redhat.com
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2238352
Source: secalert@redhat.com
Issue Tracking Patch
https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt
Source: secalert@redhat.com
Exploit Third Party Advisory
https://www.qualys.com/cve-2023-4911/
Source: secalert@redhat.com
Third Party Advisory
http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2023/Oct/11
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/2
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Mailing List
http://www.openwall.com/lists/oss-security/2023/10/03/3
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2023/10/05/1
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2023/10/13/11
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2023/10/14/3
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2023/10/14/5
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2023/10/14/6
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://access.redhat.com/errata/RHSA-2023:5453
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5454
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5455
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5476
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0033
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4911
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2238352
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://security.gentoo.org/glsa/202310-03
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://security.netapp.com/advisory/ntap-20231013-0006/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.debian.org/security/2023/dsa-5514
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://www.qualys.com/cve-2023-4911/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4911
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

36 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
67.8%
99th percentile
Exploitation Status
Actively Exploited
Remediation due: 2023-12-12

Weaknesses (CWE)

CWE-122 CWE-787

Affected Vendors

redhat canonical debian fedoraproject gnu netapp

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