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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Xorg libXdmcp
1.1.2affected
References
- https://security.gentoo.org/glsa/201704-03 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625 ↗
- https://access.redhat.com/errata/RHSA-2017:1865 ↗
- http://www.securitytracker.com/id/1037919 ↗
- https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f ↗
- http://www.securityfocus.com/bid/96480 ↗
- https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/ ↗
- https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html ↗