CVE-2018-15853
published 2018-08-25CVE-2018-15853: 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…
PriorityP418medium5.5CVSS 3.0
AVLACLPRLUINSUCNINAH
EPSS
0.54%
42.4th percentile
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.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | libxkbcommon | < libxkbcommon 0.8.2-1 (bookworm) | libxkbcommon 0.8.2-1 (bookworm) |
| debian | x11-xkb-utils | < libxkbcommon 0.8.2-1 (bookworm) | libxkbcommon 0.8.2-1 (bookworm) |
| xkbcommon | libxkbcommon | < 0.8.1 | 0.8.1 |
| xkbcommon | libxkbcommon | >= 0 < 0.8.2-1 | 0.8.2-1 |
| xkbcommon | libxkbcommon | >= 0 < 0.8.2-1 | 0.8.2-1 |
| xkbcommon | libxkbcommon | >= 0 < 0.8.2-1 | 0.8.2-1 |
| xkbcommon | libxkbcommon | >= 0 < 0.8.2-1 | 0.8.2-1 |
| xkbcommon | libxkbcommon | >= 0 < 0.4.1-0ubuntu1.1 | 0.4.1-0ubuntu1.1 |
| xkbcommon | libxkbcommon | >= 0 < 0.5.0-1ubuntu2.1 | 0.5.0-1ubuntu2.1 |
| xkbcommon | libxkbcommon | >= 0 < 0.8.0-1ubuntu0.1 | 0.8.0-1ubuntu0.1 |
| xkbcommon | xkbcommon | < 0.8.1 | 0.8.1 |
CVSS provenance
nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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GHSA
GHSA-vp7j-5755-6r5q: Endless recursion exists in xkbcomp/expr
ghsa_unreviewed·2022-05-14
CVE-2018-15853 [MEDIUM] CWE-400 GHSA-vp7j-5755-6r5q: Endless recursion exists in xkbcomp/expr
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.
OSV
libxkbcommon vulnerabilities
osv·2018-11-06·CVSS 5.5
CVE-2018-15853 [MEDIUM] libxkbcommon vulnerabilities
libxkbcommon vulnerabilities
USN-3786-1 fixed several vulnerabilities in libxkbcommon. This
update provides the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
OSV
libxkbcommon vulnerabilities
osv·2018-10-08·CVSS 5.5
CVE-2018-15853 [MEDIUM] libxkbcommon vulnerabilities
libxkbcommon vulnerabilities
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
OSV
CVE-2018-15853: Endless recursion exists in xkbcomp/expr
osv·2018-08-25·CVSS 5.5
CVE-2018-15853 [MEDIUM] CVE-2018-15853: Endless recursion exists in xkbcomp/expr
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.
Ubuntu
libxkbcommon vulnerabilities
vendor_ubuntu·2018-11-06·CVSS 5.5
CVE-2018-15853 [MEDIUM] libxkbcommon vulnerabilities
Title: libxkbcommon vulnerabilities
Summary: Several security issues were fixed in libxkbcommon.
USN-3786-1 fixed several vulnerabilities in libxkbcommon. This
update provides the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
libxkbcommon vulnerabilities
vendor_ubuntu·2018-10-08·CVSS 5.5
CVE-2018-15853 [MEDIUM] libxkbcommon vulnerabilities
Title: libxkbcommon vulnerabilities
Summary: Several security issues were fixed in libxkbcommon.
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
vendor_redhat·2018-03-10·CVSS 5.5
CVE-2018-15853 [MEDIUM] CWE-674 libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
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.
An uncontrolled recursion flaw was found in libxkbcommon and xkbcomp in the way it parses boolean expressions. A specially crafted file provided to xkbcomp could crash the application.
Package: xkbcomp (Red Hat Enterprise Linux 10) - Fix deferred
Package: libxkbcommon (Red Hat Enterprise Linux 8) - Not affected
Package: xkbcomp (Red Hat Enterprise Linux 9) - Fix deferred
Debian
CVE-2018-15853: libxkbcommon - Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before ...
vendor_debian·2018·CVSS 5.5
CVE-2018-15853 [MEDIUM] CVE-2018-15853: libxkbcommon - Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before ...
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.
Scope: local
bookworm: resolved (fixed in 0.8.2-1)
bullseye: resolved (fixed in 0.8.2-1)
forky: resolved (fixed in 0.8.2-1)
sid: resolved (fixed in 0.8.2-1)
trixie: resolved (fixed in 0.8.2-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-15853 libxkbcommon: Endless recursion in xkbcomp/expr.c resulting in a crash [fedora-all]
bugzilla·2018-10-25·CVSS 5.5
CVE-2018-15853 [MEDIUM] CVE-2018-15853 libxkbcommon: Endless recursion in xkbcomp/expr.c resulting in a crash [fedora-all]
CVE-2018-15853 libxkbcommon: Endless recursion in xkbcomp/expr.c resulting in a crash [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multip
Bugzilla
CVE-2018-15853 libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
bugzilla·2018-08-28·CVSS 5.5
CVE-2018-15853 [MEDIUM] CVE-2018-15853 libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
CVE-2018-15853 libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash
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.
Upstream patch:
https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a
References:
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
Discussion:
Created libxkbcommon tracking bugs for this issue:
Affects: fedora-all [bug 1642852]
---
When parsing a boolean expression that is composed by another boolean expression, like a negated expression, the ExprResolveBoolean() function is recursively called, but on the same
https://access.redhat.com/errata/RHSA-2019:2079https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632ahttps://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.htmlhttps://security.gentoo.org/glsa/201810-05https://usn.ubuntu.com/3786-1/https://usn.ubuntu.com/3786-2/https://access.redhat.com/errata/RHSA-2019:2079https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632ahttps://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.htmlhttps://security.gentoo.org/glsa/201810-05https://usn.ubuntu.com/3786-1/https://usn.ubuntu.com/3786-2/
2018-08-25
Published