CVE-2019-19519
First published: Thu Dec 05 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openbsd Openbsd | =6.6 |
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Reference Links
- http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html
- http://seclists.org/fulldisclosure/2019/Dec/14
- http://www.openwall.com/lists/oss-security/2019/12/04/5
- https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211
- https://seclists.org/bugtraq/2019/Dec/8
- https://www.openbsd.org/errata66.html
- https://www.openwall.com/lists/oss-security/2019/12/04/5
Frequently Asked Questions
What is CVE-2019-19519?
CVE-2019-19519 is a vulnerability in OpenBSD 6.6 that allows local users to achieve any login class (often excluding root) through the su -L option due to a logic error in the main function in su/su.c.
How severe is CVE-2019-19519?
CVE-2019-19519 has a severity score of 7.8, which is considered high.
Which software versions are affected by CVE-2019-19519?
CVE-2019-19519 affects OpenBSD 6.6.
How can local users exploit CVE-2019-19519?
Local users can exploit CVE-2019-19519 by using the su -L option to achieve any login class, except root, due to a logic error in the main function in su/su.c.
Are there any references for CVE-2019-19519?
Yes, you can refer to the following links for more information: [1] http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html [2] http://seclists.org/fulldisclosure/2019/Dec/14 [3] http://www.openwall.com/lists/oss-security/2019/12/04/5
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