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CVE-2018-15855

Date: August 25, 2018

Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled.

Language: Yacc

Severity Score

Related Resources (10)

https://security-tracker.debian.org/tracker/CVE-2018-15855
https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff
https://access.redhat.com/errata/RHSA-2019:2079
https://access.redhat.com/security/cve/CVE-2018-15855
https://usn.ubuntu.com/3786-1/
https://usn.ubuntu.com/3786-2/
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
https://nvd.nist.gov/vuln/detail/CVE-2018-15855
https://security.gentoo.org/glsa/201810-05
https://www.mend.io/vulnerability-database/CVE-2018-15855

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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