Integer overflow in Opencontainers Runc
CVE-2021-43784
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc, netlink is used internally as a serialization system for specifying the relevant container configuration to the `C` portion of the…
Vulnerability class: Integer Overflow
EPSS: 0.001 (29.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.
Affected products
- Opencontainers Runc — versions < 1.0.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/opencontainers/runc/security/advisories/GHSA-v95c-p5hm-xq8f
- github.com/opencontainers/runc/commit/9c444070ec7bb83995dbc0185da68284da71c554
- github.com/opencontainers/runc/commit/d72d057ba794164c3cce9451a00b72a78b25e1ae
- github.com/opencontainers/runc/commit/f50369af4b571e358f20b139eea52d612eb55eed
- bugs.chromium.org/p/project-zero/issues/detail
- [debian-lts-announce] 20211206 [SECURITY] [DLA 2841-1] runc security update (mailing-list)
- [debian-lts-announce] 20240219 [SECURITY] [DLA 3735-1] runc security update (mailing-list)
Frequently asked questions
- What is CVE-2021-43784?
- CVE-2021-43784 is a medium-severity vulnerability in Opencontainers Runc, classified under Integer Overflow or Wraparound. CVSS score: 6.0/10. Published 2021-12-06.
- How severe is CVE-2021-43784?
- Medium severity. CVSS v3 base score is 6.0 out of 10.
- Is CVE-2021-43784 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.