CVE-2024-21626

Aliases:GHSA-xr7r-f8xq-vfvvGO-2024-2491
Advisory lineage Upstream: 0 Downstream: 34
Modified
Published: 31 Jan 2024, 21:31
Last modified:15 May 2025, 16:02

Vulnerability Summary

Overall Risk (default)
medium
45/100
CVSS Score
8.6 HIGH
v3.1 (cve.org)
EPSS Score
5.08% LOW
5% probability +0.52%
KEV
Not listed
Ransomware
No reports
Public exploits
3 found
Dark Web
Not detected

Timeline

31 Jan 2024, 21:31
Published
Vulnerability first disclosed
15 May 2025, 16:02
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.6CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 5.08%• Percentile: 90%

Techniques & Countermeasures

  • 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.

  • CWE-668•Exposure of Resource to Wrong Sphere

    The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

Affected Systems

  • fedoraproject•fedora

    39

  • github.com/opencontainers•runc

    ≥ 1.0.0-rc93, < 1.1.12

  • linuxfoundation•runc

    < 1.1.12

  • opencontainers•runc

    ≥ v1.0.0-rc93, < 1.1.12

References (14)