CVE-2019-19519 json
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 th…
published 6y ago modified 4mo ago also EUVD-2019-9137
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerExploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- openwall.com https://www.openwall.com/lists/oss-security/2019/12/04/5 referenced PoC, tagged "exploit" by a source, unverified
- openwall.com http://www.openwall.com/lists/oss-security/2019/12/04/5 referenced PoC, tagged "exploit" by a source, unverified
- seclists.org https://seclists.org/bugtraq/2019/Dec/8 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
openwall.com
/lists/oss-security/2019/12/04/5
exploit, mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2019/12/04/5
mailing-list, exploit, third-party-advisory
-
seclists.org
/bugtraq/2019/Dec/8
mailing-list, exploit, third-party-advisory
-
openbsd.org
/errata66.html
vendor-advisory
-
github.com
/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211
third-party-advisory
-
packetstormsecurity.com
/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html
third-party-advisory
-
seclists.org
/fulldisclosure/2019/Dec/14
mailing-list, third-party-advisory
Sources
- CVE List CVE-2019-19519
- NVD CVE-2019-19519
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.