CVE-2018-15853
First published: Sat Aug 25 2018(Updated: )
Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libxkbcommon | <0.8.1 | 0.8.1 |
| debian/libxkbcommon | 1.0.3-2 1.5.0-1 1.6.0-1 | |
| libxkbcommon-dev | <0.8.1 | |
| dbus-common | <0.8.1 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Libxkbcommon0 | <0.8.1 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2019:2079
- https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
- https://security.gentoo.org/glsa/201810-05
- https://usn.ubuntu.com/3786-1/
- https://usn.ubuntu.com/3786-2/
- https://launchpad.net/bugs/cve/CVE-2018-15853
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1642852
- https://access.redhat.com/security/cve/cve-2018-15853
- https://bugzilla.redhat.com/show_bug.cgi?id=1623009
- https://security-tracker.debian.org/tracker/CVE-2018-15853
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15853
- https://nvd.nist.gov/vuln/detail/CVE-2018-15853
- https://ubuntu.com/security/CVE-2018-15853
Frequently Asked Questions
What is the severity of CVE-2018-15853?
CVE-2018-15853 is classified as a moderate severity vulnerability due to its potential to cause crashes.
How do I fix CVE-2018-15853?
To fix CVE-2018-15853, upgrade libxkbcommon to version 0.8.1 or later.
Who is affected by CVE-2018-15853?
Users of libxkbcommon versions prior to 0.8.1 are affected by CVE-2018-15853.
What is the nature of the vulnerability CVE-2018-15853?
CVE-2018-15853 is an endless recursion vulnerability in the xkbcomp component of libxkbcommon.
Can CVE-2018-15853 be exploited remotely?
CVE-2018-15853 requires local access to exploit, as it involves supplying a crafted keymap file.
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