CVE-2017-13721 Information

Description

In X.Org Server (aka xserver and xorg-server) before 1.19.4 an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.

CVSS Vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.debian.org/security/2017/dsa-4000 http://www.openwall.com/lists/oss-security/2017/10/04/10 http://www.securityfocus.com/bid/101238 https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1 https://lists.x.org/archives/xorg-announce/2017-October/002808.html https://security.gentoo.org/glsa/201710-30

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.7