CVE-2023-4911
Severity CVSS v4.0:
Pending analysis
Type:
CWE-122
Heap-based Buffer Overflow
Publication date:
03/10/2023
Last modified:
13/02/2026
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.
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* | ||
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | 2.34 (including) | 2.39 (excluding) |
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | ||
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | ||
| cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_eus:8.6:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_eus:9.4:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_eus:9.6:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.6:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.4_aarch64:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://access.redhat.com/errata/RHSA-2023:5453
- https://access.redhat.com/errata/RHSA-2023:5454
- https://access.redhat.com/errata/RHSA-2023:5455
- https://access.redhat.com/errata/RHSA-2023:5476
- https://access.redhat.com/errata/RHSA-2024:0033
- https://access.redhat.com/security/cve/CVE-2023-4911
- https://bugzilla.redhat.com/show_bug.cgi?id=2238352
- https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt
- https://www.qualys.com/cve-2023-4911/
- http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html
- http://seclists.org/fulldisclosure/2023/Oct/11
- http://www.openwall.com/lists/oss-security/2023/10/03/2
- http://www.openwall.com/lists/oss-security/2023/10/03/3
- http://www.openwall.com/lists/oss-security/2023/10/05/1
- http://www.openwall.com/lists/oss-security/2023/10/13/11
- http://www.openwall.com/lists/oss-security/2023/10/14/3
- http://www.openwall.com/lists/oss-security/2023/10/14/5
- http://www.openwall.com/lists/oss-security/2023/10/14/6
- https://access.redhat.com/errata/RHSA-2023:5453
- https://access.redhat.com/errata/RHSA-2023:5454
- https://access.redhat.com/errata/RHSA-2023:5455
- https://access.redhat.com/errata/RHSA-2023:5476
- https://access.redhat.com/errata/RHSA-2024:0033
- https://access.redhat.com/security/cve/CVE-2023-4911
- https://bugzilla.redhat.com/show_bug.cgi?id=2238352
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
- https://security.gentoo.org/glsa/202310-03
- https://security.netapp.com/advisory/ntap-20231013-0006/
- https://www.debian.org/security/2023/dsa-5514
- https://www.exploit-db.com/exploits/52479
- https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt
- https://www.qualys.com/cve-2023-4911/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4911