Vulnerability Details : CVE-2019-19522
Potential exploit
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.
Products affected by CVE-2019-19522
- cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-19522
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-19522
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2019-19522
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-19522
-
http://seclists.org/fulldisclosure/2019/Dec/14
Full Disclosure: Authentication vulnerabilities in OpenBSDThird Party Advisory
-
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html
Qualys Security Advisory - OpenBSD Authentication Bypass / Privilege Escalation ≈ Packet StormThird Party Advisory
-
https://seclists.org/bugtraq/2019/Dec/8
Bugtraq: Authentication vulnerabilities in OpenBSDExploit;Mailing List;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2019/12/04/5
oss-security - Authentication vulnerabilities in OpenBSDExploit;Mailing List;Third Party Advisory
-
https://www.openbsd.org/errata66.html
OpenBSD 6.6 ErrataVendor Advisory
-
http://www.openwall.com/lists/oss-security/2019/12/04/5
oss-security - Authentication vulnerabilities in OpenBSDExploit;Mailing List;Third Party Advisory
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