CVE-2019-19522

high

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.

References

Advisories
More

http://seclists.org/fulldisclosure/2019/Dec/14

http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html

https://www.openwall.com/lists/oss-security/2019/12/04/5

https://www.openbsd.org/errata66.html

https://seclists.org/bugtraq/2019/Dec/8

http://www.openwall.com/lists/oss-security/2019/12/04/5

Details

Source: Mitre, NVD

Published: 2019-12-05

Updated: 2020-08-24

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00124