CVE-2018-15857

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

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

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html	Mailing List Patch Third Party Advisory
https://github.com/xkbcommon/libxkbcommon/commit/c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb	Patch Third Party Advisory
https://usn.ubuntu.com/3786-1/	Third Party Advisory
https://security.gentoo.org/glsa/201810-05	Third Party Advisory
https://usn.ubuntu.com/3786-2/	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2079

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:xkbcommon:xkbcommon::::::::
	cpe:2.3:a:xkbcommon:libxkbcommon::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::

Information

Published : 2018-08-25 14:29

Updated : 2019-08-06 10:15

NVD link : CVE-2018-15857

Mitre link : CVE-2018-15857

JSON object : View

CWE

CWE-416

Use After Free

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Products Affected

canonical

ubuntu_linux

xkbcommon

libxkbcommon
xkbcommon

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