CVE-2017-13723

Publication date 9 October 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could 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.

Status

Package Ubuntu Release Status
xorg 17.04 zesty
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-hwe-16.04 17.04 zesty Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-server 17.04 zesty
Fixed 2:1.19.3-1ubuntu1.2
16.04 LTS xenial
Fixed 2:1.18.4-0ubuntu0.6
14.04 LTS trusty
Fixed 2:1.15.1-0ubuntu2.10
xorg-server-hwe-16.04 17.04 zesty Not in release
16.04 LTS xenial
Fixed 2:1.19.3-1ubuntu1~16.04.3
14.04 LTS trusty Not in release
xorg-server-lts-utopic 17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-vivid 17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-wily 17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-xenial 17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Fixed 2:1.18.3-1ubuntu2.3~trusty3

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
xorg-server

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3453-1
    • X.Org X server vulnerabilities
    • 12 October 2017

Other references

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