CVE-2019-18837

HIGH EPSS 69.4%
Published Nov 13, 20196y ago · Modified Jun 17, 20262w ago
8.6 CVSS 3.1
High
Find Similar
Published Nov 13, 2019 6y ago
Last Modified Jun 17, 2026 2w ago

Description

An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.

CVSS Details

Base Score
8.6
Exploitability
3.9
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
69.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-59

Affected Products 3

VendorProductVersionRange
crun_projectcrun* <0.10.5
fedoraprojectfedora30any
fedoraprojectfedora31any

References 4

  • github.com https://github.com/containers/crun/pull/173
  • github.com https://github.com/containers/crun/releases/tag/0.10.5
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.