Authentication Vulnerability in OpenBSD by OpenBSD Foundation
CVE-2019-19522

7.8HIGH

Key Information:

Vendor
OpenBSD
Status
OpenBSD
Vendor
CVE Published:
5 December 2019

Summary

In OpenBSD 6.6, a specific configuration that enables S/Key or YubiKey authentication allows local users within the auth group to escalate their privileges to root. This vulnerability arises because the files associated with root, located in /etc/skey or /var/db/yubikey, can be modified by non-root users. This misconfiguration can lead to severe security implications if exploited.

References

https://www.openwall.com/lists/oss-security/2019/12/04/5
x_refsource_MISC
https://www.openbsd.org/errata66.html
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2019/12/04/5
mailing-listx_refsource_MLIST

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.