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CVE-2021-30465

Published: 19 May 2021

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

Priority

High

CVSS 3 base score: 8.5

Status

Package Release Status
runc
Launchpad, Ubuntu, Debian
bionic
Released (1.0.0~rc93-0ubuntu1~18.04.2)
focal
Released (1.0.0~rc93-0ubuntu1~20.04.2)
groovy
Released (1.0.0~rc93-0ubuntu1~20.10.2)
hirsute
Released (1.0.0~rc93-0ubuntu1.1)
impish
Released (1.0.0~rc93-0ubuntu2)
jammy
Released (1.0.0~rc93-0ubuntu2)
precise Does not exist

trusty Does not exist

upstream
Released (1.0.0-rc95)
xenial Ignored
(end of standard support, was needed)