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CVE-2023-4911 Detail

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.


Severity



CVSS 4.0 Severity and Metrics:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html Exploit  Third Party Advisory 
http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html Exploit  Third Party Advisory 
http://seclists.org/fulldisclosure/2023/Oct/11 Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/03/2 Exploit  Mailing List 
http://www.openwall.com/lists/oss-security/2023/10/03/3 Mailing List  Patch 
http://www.openwall.com/lists/oss-security/2023/10/05/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/13/11 Mailing List 
http://www.openwall.com/lists/oss-security/2023/10/14/3 Mailing List 
http://www.openwall.com/lists/oss-security/2023/10/14/5 Mailing List 
http://www.openwall.com/lists/oss-security/2023/10/14/6 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2023:5453 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2023:5454 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2023:5455 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2023:5476 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2024:0033 Third Party Advisory 
https://access.redhat.com/security/cve/CVE-2023-4911 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2238352 Issue Tracking  Patch  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/ Mailing List 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/ Exploit  Mailing List 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/ Mailing List 
https://security.gentoo.org/glsa/202310-03 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20231013-0006/ Mailing List  Third Party Advisory 
https://www.debian.org/security/2023/dsa-5514 Third Party Advisory 
https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt Exploit 
https://www.qualys.com/cve-2023-4911/ Third Party Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
GNU C Library Buffer Overflow Vulnerability 11/21/2023 12/12/2023 Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  
CWE-122 Heap-based Buffer Overflow Provider acceptance level Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

22 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-4911
NVD Published Date:
10/03/2023
NVD Last Modified:
02/22/2024
Source:
Red Hat, Inc.