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.

CVSS v3 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html	Third Party Advisory
http://seclists.org/fulldisclosure/2019/Dec/14	Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/12/04/5	Exploit Mailing List Third Party Advisory
https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211	Third Party Advisory
https://seclists.org/bugtraq/2019/Dec/8	Exploit Mailing List Third Party Advisory
https://www.openbsd.org/errata66.html	Vendor Advisory
https://www.openwall.com/lists/oss-security/2019/12/04/5	Exploit Mailing List Third Party Advisory
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html	Third Party Advisory
http://seclists.org/fulldisclosure/2019/Dec/14	Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/12/04/5	Exploit Mailing List Third Party Advisory
https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211	Third Party Advisory
https://seclists.org/bugtraq/2019/Dec/8	Exploit Mailing List Third Party Advisory
https://www.openbsd.org/errata66.html	Vendor Advisory
https://www.openwall.com/lists/oss-security/2019/12/04/5	Exploit Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*

History

21 Nov 2024, 04:34

Type	Values Removed	Values Added
References	~~() http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html - Third Party Advisory~~	() http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html - Third Party Advisory
References	~~() http://seclists.org/fulldisclosure/2019/Dec/14 - Third Party Advisory~~	() http://seclists.org/fulldisclosure/2019/Dec/14 - Third Party Advisory
References	~~() http://www.openwall.com/lists/oss-security/2019/12/04/5 - Exploit, Mailing List, Third Party Advisory~~	() http://www.openwall.com/lists/oss-security/2019/12/04/5 - Exploit, Mailing List, Third Party Advisory
References	~~() https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211 - Third Party Advisory~~	() https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211 - Third Party Advisory
References	~~() https://seclists.org/bugtraq/2019/Dec/8 - Exploit, Mailing List, Third Party Advisory~~	() https://seclists.org/bugtraq/2019/Dec/8 - Exploit, Mailing List, Third Party Advisory
References	~~() https://www.openbsd.org/errata66.html - Vendor Advisory~~	() https://www.openbsd.org/errata66.html - Vendor Advisory
References	~~() https://www.openwall.com/lists/oss-security/2019/12/04/5 - Exploit, Mailing List, Third Party Advisory~~	() https://www.openwall.com/lists/oss-security/2019/12/04/5 - Exploit, Mailing List, Third Party Advisory

Information

Published : 2019-12-05 00:15

Updated : 2024-11-21 04:34

NVD link : CVE-2019-19519

Mitre link : CVE-2019-19519

CVE.ORG link : CVE-2019-19519

JSON object : View

Products Affected

openbsd

openbsd

CWE

CWE-287

Improper Authentication

7.8 /10