CVE-2019-19522

CVSS V2 High 7.2 CVSS V3 High 7.8
Description
OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.
Overview
  • CVE ID
  • CVE-2019-19522
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-12-05T00:15:11
  • Last Modified Date
  • 2020-08-24T17:37:01
Weakness Enumerations
CWE URL
CWE-732 http://cwe.mitre.org/data/definitions/732.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.openbsd.org/errata66.html Vendor Advisory
https://www.openwall.com/lists/oss-security/2019/12/04/5 Exploit Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/12/04/5 Exploit Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Dec/8 Exploit Mailing List Third Party Advisory
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html Third Party Advisory
http://seclists.org/fulldisclosure/2019/Dec/14 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-19522
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19522
History
Created Old Value New Value Data Type Notes
2022-05-10 16:36:32 Added to TrackCVE
2022-12-04 07:24:29 2019-12-05T00:15Z 2019-12-05T00:15:11 CVE Published Date updated
2022-12-04 07:24:30 2020-08-24T17:37:01 CVE Modified Date updated
2022-12-04 07:24:30 Analyzed Vulnerability Status updated