CVE-2018-15856 — Infinite Loop in Xkbcommon

CWE-835 — Infinite Loop10 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 86.71%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Xkbcommon LibxkbcommonXkbcommonDebian Libxkbcommon+1 more
Timeline
PublishedAug 25
Latest updateMay 13

Description

An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDxkbcommon/xkbcommon< 0.8.1
▶debiandebian/libxkbcommon< libxkbcommon 0.8.2-1 (bookworm)
▶Debianxkbcommon/libxkbcommon< 0.8.2-1+3
▶Ubuntuxkbcommon/libxkbcommon< 0.4.1-0ubuntu1.1+2

Also affects: Ubuntu Linux 14.04, 16.04, 18.04

Patches

Patch: github.com ↗Patch: lists.freedesktop.org ↗Patch: github.com ↗

🔴Vulnerability Details

4
GHSA
GHSA-78rh-27p9-chj5: An infinite loop when reaching EOL unexpectedly in compose/parser↗2022-05-13
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OSV
libxkbcommon vulnerabilities↗2018-11-06
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OSV
libxkbcommon vulnerabilities↗2018-10-08
▶
OSV
CVE-2018-15856: An infinite loop when reaching EOL unexpectedly in compose/parser↗2018-08-25
▶

📋Vendor Advisories

4
Ubuntu
libxkbcommon vulnerabilities↗2018-11-06
▶
Ubuntu
libxkbcommon vulnerabilities↗2018-10-08
▶
Red Hat
libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash↗2018-03-12
▶
Debian
CVE-2018-15856: libxkbcommon - An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the key...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-15856 libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash↗2018-08-28
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