CVE-2024-21626

runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned container process (from runc exec) to have a working directory in the host filesystem namespace, allowing for a container escape by giving access to the host filesystem ("attack 2"). The same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue.

Affected products

Alt Linux, Almalinux, Centos, Check Point Gaia, Docker, Linuxmint, Red Hat, Red Os

Linuxfoundation Runc

< 1.1.12

Fix

Available

CVSS 3.1

8.6 HIGH

EPSS

18.1% (97th percentile)

Weakness

CWE-403, CWE-668, CWE-200

NVD status

Modified

Published

2024-01-31