VulnerabilityModified
CVE-2019-19519
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.
HIGH 7.8EPSS 0.39%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.39% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- openbsd/openbsd
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2019/Dec/14Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
- https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211Third Party Advisory
- https://seclists.org/bugtraq/2019/Dec/8Exploit, Mailing List, Third Party Advisory
- https://www.openbsd.org/errata66.htmlVendor Advisory
- https://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2019/Dec/14Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
- https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211Third Party Advisory
- https://seclists.org/bugtraq/2019/Dec/8Exploit, Mailing List, Third Party Advisory
- https://www.openbsd.org/errata66.htmlVendor Advisory
- https://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.