module
Glibc Tunables Privilege Escalation CVE-2023-4911 (aka Looney Tunables)
| Disclosed |
|---|
| Oct 3, 2023 |
Disclosed
Oct 3, 2023
Description
A buffer overflow exists in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES
environment variable. This issue allows an local attacker to use maliciously crafted GLIBC_TUNABLES when
launching binaries with SUID permission to execute code in the context of the root user.
This module targets glibc packaged on Ubuntu and Debian. The specific glibc versions this module targets are:
Ubuntu:
2.35-0ubuntu3.4 > 2.35
2.37-0ubuntu2.1 > 2.37
2.38-1ubuntu6 > 2.38
Debian:
2.31-13-deb11u7 > 2.31
2.36-9-deb12u3 > 2.36
Fedora 37 and 38 and other distributions of linux also come packaged with versions of glibc vulnerable to CVE-2023-4911
however this module does not target them.
environment variable. This issue allows an local attacker to use maliciously crafted GLIBC_TUNABLES when
launching binaries with SUID permission to execute code in the context of the root user.
This module targets glibc packaged on Ubuntu and Debian. The specific glibc versions this module targets are:
Ubuntu:
2.35-0ubuntu3.4 > 2.35
2.37-0ubuntu2.1 > 2.37
2.38-1ubuntu6 > 2.38
Debian:
2.31-13-deb11u7 > 2.31
2.36-9-deb12u3 > 2.36
Fedora 37 and 38 and other distributions of linux also come packaged with versions of glibc vulnerable to CVE-2023-4911
however this module does not target them.
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