MGASA-2019-0087

Description

Updated lxc packages fix security vulnerability LXC allows attackers to overwrite the host LXC binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: a new container with an attacker-controlled image, or an existing container, to which the attacker previously had write access. This occurs because of file-descriptor mishandling, related to /proc/self/exe. This attack is only possible with privileged containers since it requires root privilege on the host to overwrite the binary.

Affected Systems

• mageia•lxc

  < 2.0.8-1.1.mga6

References (3)

• https://advisories.mageia.org/MGASA-2019-0087.html
• https://bugs.mageia.org/show_bug.cgi?id=24350
• https://www.openwall.com/lists/oss-security/2019/02/11/2