PoC Index85,079 CVEs with PoCs

CVE-2024-21626

runc container breakout through process.cwd trickery and leaked fds

HIGH 8.6EPSS 18.9%

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
opencontainers · runc
CVSS v3.1 NVD
8.6 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
18.92% chance of exploitation in the next 30 days, 97th percentile
Published
2024-01-31
Updated
2026-09-17

Proof-of-concept exploits (20)

Metasploit modules (1)

Security advisories

References

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