CVE-2022-29162
Last modified
CVE-2022-29162 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes `runc exec --cap` behavior such that the additional capabilities granted to the process being executed (as specified via `--cap` arguments) do not include inheritable capabilities. In addition, `runc spec` is changed to not set any inheritable capabilities in the created example OCI spec (`config.json`) file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Runc | < 1.1.2 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Fedoraproject | Fedora | 36 |
References
- https://github.com/opencontainers/runc/commit/d04de3a9b72d7a2455c1885fc75eb36d02cd17b5Patch, Third Party Advisory
- https://github.com/opencontainers/runc/releases/tag/v1.1.2Release Notes, Third Party Advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-f3fp-gc8g-vw66Third Party Advisory
- https://github.com/opencontainers/runc/commit/d04de3a9b72d7a2455c1885fc75eb36d02cd17b5Patch, Third Party Advisory
- https://github.com/opencontainers/runc/releases/tag/v1.1.2Release Notes, Third Party Advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-f3fp-gc8g-vw66Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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