CWE-403
Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')
A process does not close sensitive file descriptors before invoking a child process, which allows the child to perform unauthorized I/O operations using those descriptors.
CVE-2024-21626 (GCVE-0-2024-21626)
Vulnerability from cvelistv5 – Published: 2024-01-31 21:31 – Updated: 2025-05-15 16:02
VLAI?
Summary
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.
Severity ?
8.6 (High)
CWE
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| opencontainers | runc |
Affected:
>=v1.0.0-rc93, < 1.1.12
|
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00005.html"
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"source": {
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"discovery": "UNKNOWN"
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"title": "runc container breakout through process.cwd trickery and leaked fds"
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"datePublished": "2024-01-31T21:31:14.391Z",
"dateReserved": "2023-12-29T03:00:44.953Z",
"dateUpdated": "2025-05-15T16:02:34.619Z",
"state": "PUBLISHED"
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.