Errata ALT-PU-2023-6087-1: Information
Fixes
Published: Oct. 3, 2023
Modified: Feb. 22, 2024
Modified: Feb. 22, 2024
CVE-2023-4911
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: HIGH (7.8) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Links:
- https://www.qualys.com/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://access.redhat.com/security/cve/CVE-2023-4911
- http://www.openwall.com/lists/oss-security/2023/10/03/3
- http://www.openwall.com/lists/oss-security/2023/10/03/2
- https://www.debian.org/security/2023/dsa-5514
- https://security.gentoo.org/glsa/202310-03
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
- 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/
- http://www.openwall.com/lists/oss-security/2023/10/05/1
- https://access.redhat.com/errata/RHSA-2023:5454
- https://access.redhat.com/errata/RHSA-2023:5453
- https://access.redhat.com/errata/RHSA-2023:5455
- https://access.redhat.com/errata/RHSA-2023:5476
- http://seclists.org/fulldisclosure/2023/Oct/11
- http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
- https://security.netapp.com/advisory/ntap-20231013-0006/
- 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
- http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html
- RHSA-2024:0033
Published: Sept. 25, 2023
Modified: Feb. 23, 2024
Modified: Feb. 23, 2024
CVE-2023-5156
A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.
Severity: HIGH (7.5) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Links:
- https://bugzilla.redhat.com/show_bug.cgi?id=2240541
- https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=ec6b95c3303c700eb89eebeda2d7264cc184a796
- https://sourceware.org/bugzilla/show_bug.cgi?id=30884
- https://access.redhat.com/security/cve/CVE-2023-5156
- http://www.openwall.com/lists/oss-security/2023/10/03/5
- http://www.openwall.com/lists/oss-security/2023/10/03/4
- http://www.openwall.com/lists/oss-security/2023/10/03/6
- http://www.openwall.com/lists/oss-security/2023/10/03/8
- https://security.gentoo.org/glsa/202402-01