CVE-2023-4911 Information

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.

Reference

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/