CVE-2019-18837

CVSS V2 Medium 5 CVSS V3 High 8.6
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.
Overview
  • CVE ID
  • CVE-2019-18837
  • Assigner
  • psirt@mcafee.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-11-13T20:15:10
  • Last Modified Date
  • 2019-11-18T17:20:18
Weakness Enumerations
CWE URL
CWE-59 http://cwe.mitre.org/data/definitions/59.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:crun_project:crun:*:*:*:*:*:*:*:* 1 OR 0.10.5
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • 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 Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 8.6
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4
References
Reference URL Reference Tags
https://github.com/containers/crun/releases/tag/0.10.5 Release Notes
https://github.com/containers/crun/pull/173 Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-18837
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18837
History
Created Old Value New Value Data Type Notes
2022-05-10 16:59:08 Added to TrackCVE
2022-12-04 06:02:54 2019-11-13T20:15Z 2019-11-13T20:15:10 CVE Published Date updated
2022-12-04 06:02:54 2019-11-18T17:20:18 CVE Modified Date updated
2022-12-04 06:02:54 Analyzed Vulnerability Status updated