Vulnerability Details : CVE-2019-19519
Potential exploit
In OpenBSD 6.6, local users can use the su -L option to achieve any login class (often excluding root) because there is a logic error in the main function in su/su.c.
Vulnerability category: BypassGain privilege
Products affected by CVE-2019-19519
- cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-19519
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-19519
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
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-2019-19519
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-19519
-
https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211
src/su.c at 2dfc98f42e117c7605b52b5020b630d98601dc22 · openbsd/src · GitHubThird Party Advisory
-
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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