CVE-2017-2625 Information

Description

It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp a local attacker could potentially use information available from the process list to brute force the key allowing them to hijack other users’ sessions.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/96480 http://www.securitytracker.com/id/1037919 https://access.redhat.com/errata/RHSA-2017:1865 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625 https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html https://security.gentoo.org/glsa/201704-03 https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5