CVE-2019-19520

xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a LIBGL_DRIVERS_PATH environment variable, because xenocara/lib/mesa/src/loader/loader.c mishandles dlopen.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

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

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
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://www.openwall.com/lists/oss-security/2019/12/04/6	Mailing List
http://www.openwall.com/lists/oss-security/2019/12/04/5	Exploit Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Dec/8	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

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Configurations

Configuration 1 (hide)

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

Information

Published : 2019-12-04 16:15

Updated : 2020-08-24 10:37

NVD link : CVE-2019-19520

Mitre link : CVE-2019-19520

JSON object : View

CWE

CWE-863

Incorrect Authorization

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Products Affected

openbsd

openbsd

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