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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2024-01-31T21:31:14.391Z

Updated: 2024-08-19T07:48:05.378Z

Reserved: 2023-12-29T03:00:44.953Z

Link: CVE-2024-21626

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2024-01-31T22:15:53.780

Modified: 2024-02-19T03:15:08.413

Link: CVE-2024-21626

cve-icon Redhat

Severity : Important

Publid Date: 2024-01-31T20:01:00Z

Links: CVE-2024-21626 - Bugzilla