PT-2018-13244 · Xkbcommon+4 · Xkbcommon+4

Published 2018-08-25 · Updated 2024-01-05 · CVE-2018-15854

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions xkbcommon versions prior to 0.8.1

Description The issue allows local attackers to crash the xkbcommon parser by supplying a crafted keymap file, due to unchecked NULL pointer usage. This occurs because geometry tokens were desupported incorrectly, leading to a NULL pointer dereference.

Recommendations For versions prior to 0.8.1, update to version 0.8.1 or later to resolve the issue. As a temporary workaround, consider restricting the use of crafted keymap files to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CESA-2019_2079

CVE-2018-15854

MGASA-2018-0369

OPENSUSE-SU-2018_3802-1

RHSA-2019:2079

RHSA-2019_2079

SUSE-SU-2018:3685-1

SUSE-SU-2024:0037-1

USN-3786-1

USN-3786-2

Affected Products

Centos

Red Hat

Suse

Ubuntu

Xkbcommon

References · 48

• https://github.com/xkbcommon/libxkbcommon/commit/e3cacae7b1bfda0d839c280494f23284a1187adf · Patch
• https://ubuntu.com/security/CVE-2018-15857 · Vendor Advisory
• https://security.gentoo.org/glsa/201810-05 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15859 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2019-2079.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15861 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0369 · Vendor Advisory
• https://usn.ubuntu.com/3786-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15856 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15862 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-15854 · Security Note
• https://advisories.mageia.org/MGASA-2018-0369.html · Security Note
• https://ubuntu.com/security/notices/USN-3786-1 · Vendor Advisory
• https://usn.ubuntu.com/3786-2 · Vendor Advisory