CVE-2024-21626

HIGH EPSS 96.8%
Published Jan 31, 20242y ago · Modified Jun 25, 20265d ago
8.6 CVSS 3.1
High
Find Similar
Published Jan 31, 2024 2y ago
Last Modified Jun 25, 2026 5d ago

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 Details

Base Score
8.6
Exploitability
1.8
Impact
6.0
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
96.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 3

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure
CWE-403
CWE-668

Affected Products 2

VendorProductVersionRange
linuxfoundationrunc* <1.1.12
fedoraprojectfedora39any

References 40

Remediation

  • github.com https://github.com/opencontainers/runc/commit/02120488a4c0fc487d1ed2867e901eeed7ce8ecf
    Patch