Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Local
1

CVE-2024-21626

Disclosure Date: January 31, 2024
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
8.6 High
Impact Score:
6
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • fedoraproject,
  • linuxfoundation

Products

  • fedora 39,
  • runc

Additional Info

Technical Analysis