CVE detail
CVE-2023-4911: GNU C Library Buffer Overflow Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
GNU · GNU C Library
- Date added (KEV)
- Nov 21, 2023
- CISA due date
- Dec 12, 2023
- Ransomware campaign use
- Unknown
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor fix: Vendor patch
Scorifya interpretation
AI-generatedA short, structured read of the record above, generated when this page first loads, then cached for a week.
Plain English
Technical detail
From CISA
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.
This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa, https://access.redhat.com/security/cve/cve-2023-4911, https://www.debian.org/security/2023/dsa-5514 ; https://nvd.nist.gov/vuln/detail/CVE-2023-4911
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See Scorifya Controls →References
- https://bugzilla.redhat.com/show_bug.cgi?id=2238352Issue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=2238352Issue TrackingPatch
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5454Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5476Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0033Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4911Third Party Advisory
- https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txtExploitThird Party Advisory
- https://www.qualys.com/cve-2023-4911/Third Party Advisory
- http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.htmlExploitThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.htmlExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2023/Oct/11ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/03/2ExploitMailing List
- http://www.openwall.com/lists/oss-security/2023/10/03/3Mailing List
- http://www.openwall.com/lists/oss-security/2023/10/05/1Mailing List
- http://www.openwall.com/lists/oss-security/2023/10/13/11Mailing List
- http://www.openwall.com/lists/oss-security/2023/10/14/3Mailing List
- http://www.openwall.com/lists/oss-security/2023/10/14/5Mailing List
- http://www.openwall.com/lists/oss-security/2023/10/14/6Mailing List
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5454Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5476Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0033Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4911Third 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/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/Mailing List
- https://security.gentoo.org/glsa/202310-03Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231013-0006/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5514Mailing List
- https://www.exploit-db.com/exploits/52479ExploitThird Party AdvisoryVDB Entry
- https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txtExploitThird Party Advisory
- https://www.qualys.com/cve-2023-4911/Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-794697.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-831302.htmlThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4911US Government Resource
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