PT-2017-13044 · X.Org+3 · X.Org Server+3

Keith Packard · Published 2017-10-06 · Updated 2018-02-04 · CVE-2017-13723

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions X.Org Server versions prior to 1.19.4

Description A local attacker authenticated to the X server can overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.

Recommendations For versions prior to 1.19.4, update to version 1.19.4 or later to resolve the issue. As a temporary workaround, consider restricting access to xkbcomp to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2017-2383

CVE-2017-13723

DLA-1186-1

DSA-4000-1

MGASA-2017-0366

SUSE-SU-2017:3025-1

SUSE-SU-2017:3047-1

USN-3453-1

Affected Products

Alt Linux

Suse

Ubuntu

X.Org Server

References · 76

• https://osv.dev/vulnerability/DSA-4000-1 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2017-2383 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12178 · Security Note
• https://advisories.mageia.org/MGASA-2017-0366.html · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12180 · Security Note
• https://ubuntu.com/security/CVE-2017-13721 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12186 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2017:3047-1 · Vendor Advisory
• https://lists.x.org/archives/xorg-announce/2017-October/002808.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12183 · Security Note
• https://osv.dev/vulnerability/MGASA-2017-0366 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-10972 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-13723 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12182 · Security Note
• http://debian.org/security/2017/dsa-4000 · Vendor Advisory