CVE Vulnerability

CVE-2018-15862

Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with invalid virtual modifiers.

2.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html Mailing List Patch
https://github.com/xkbcommon/libxkbcommon/commit/4e2ee9c3f6050d773f8bbe05bc0edb17f1ff8371 Patch Third Party Advisory
https://usn.ubuntu.com/3786-1/ Third Party Advisory
https://security.gentoo.org/glsa/201810-05 Third Party Advisory
https://usn.ubuntu.com/3786-2/ Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2079
Configurations

Configuration 1

cpe:2.3:a:xkbcommon:xkbcommon:*:*:*:*:*:*:*:*
cpe:2.3:a:xkbcommon:libxkbcommon:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Information

Published : 2018-08-25 09:29

Updated : 2019-08-06 05:15

NVD link : CVE-2018-15862

Mitre link : CVE-2018-15862

Products Affected
No products.
CWE
CWE-476