glibc "Looney Tunables" local privilege escalation — CVE-2023-4911
A buffer overflow in the dynamic loader allows obtaining root privileges via GLIBC_TUNABLES.
A buffer overflow in the dynamic loader allows obtaining root privileges via GLIBC_TUNABLES.
A buffer overflow in the glibc dynamic loader while processing the GLIBC_TUNABLES environment variable (the Looney Tunables) grants full root access via SUID binaries.
For Ubuntu 22.04 the libc6 2.35-0ubuntu3.4 package was released with USN-6407-1. Restarting services after the update is required.
Velociraptor allows some sensitive artifacts to be gated by additional permissions. For example, the Linux.Sys.BashShell artifact allows arbitrary command execution on endpoints, and so it requires the EXECVE permission to schedule. However, no such check was implemented for client monitoring artifacts. Additionally there was no requirement that client monitoring artifacts carry the CLIENT_EVENTS type. This allows any user who can schedule client monitoring artifacts to also
Linux Kernel contains an unspecified vulnerability that can allow for privilege escalation via IPv6 networking subsystem. This vulnerability can impact multiple products, including but not limited to Suse, Red Hat, and other products using Linux.
Linux Kernel contains an out-of-bounds memory write vulnerability which could allow a local user to gain privileged access or cause a denial of service on the system.