CVE-2018-15857
Published: 25 August 2018
An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file.
Notes
Author | Note |
---|---|
leosilva | code in trusty is quite different. |
Priority
Status
Package | Release | Status |
---|---|---|
libxkbcommon Launchpad, Ubuntu, Debian |
upstream |
Released
(0.8.2-1)
|
xenial |
Released
(0.5.0-1ubuntu2.1)
|
|
bionic |
Released
(0.8.0-1ubuntu0.1)
|
|
cosmic |
Not vulnerable
(0.8.2-1)
|
|
trusty |
Released
(0.4.1-0ubuntu1.1)
|
|
Patches: vendor: https://github.com/xkbcommon/libxkbcommon/commit/c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |