CVE Vulnerability

CVE-2019-19522

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.

7.2 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.openbsd.org/errata66.html Vendor Advisory
https://www.openwall.com/lists/oss-security/2019/12/04/5 Exploit Mailing List
http://www.openwall.com/lists/oss-security/2019/12/04/5 Exploit Mailing List
https://seclists.org/bugtraq/2019/Dec/8 Exploit Mailing List
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
Configurations

Configuration 1

cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*
Information

Published : 2019-12-05 12:15

Updated : 2020-08-24 05:37

NVD link : CVE-2019-19522

Mitre link : CVE-2019-19522

Products Affected
No products.
CWE
CWE-732