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.
https://securelist.com/vulnerability-report-q1-2024/112554/
https://www.wiz.io/blog/leaky-vessels-container-escape-vulnerabilities
https://www.alibabacloud.com/en/notice/cve_2024_21626?_p_lc=1
https://www.darkreading.com/cloud-security/leaky-vessel-cloud-bugs-container-escapes-globally
https://snyk.io/blog/leaky-vessels-docker-runc-container-breakout-vulnerabilities/
https://lists.debian.org/debian-lts-announce/2024/02/msg00005.html
https://github.com/opencontainers/runc/security/advisories/GHSA-xr7r-f8xq-vfvv
https://github.com/opencontainers/runc/releases/tag/v1.1.12
https://github.com/opencontainers/runc/commit/02120488a4c0fc487d1ed2867e901eeed7ce8ecf
http://www.openwall.com/lists/oss-security/2024/02/02/3
Published: 2024-01-31
Updated: 2024-02-19
Named Vulnerability: runC Escape VulnerabilityNamed Vulnerability: runC Container EscapeNamed Vulnerability: Leaky VesselsNamed Vulnerability: Container Escape Vulnerability
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 8.6
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Severity: High
EPSS: 0.01367
Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.
Vulnerability Being Monitored