Vulnerability CVE-2017-2625
Published: 2018-07-27

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.

Type:

CWE-320

 (Key Management Errors)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
X.org -> Libxdmcp 
Redhat -> Enterprise linux 
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux workstation 

 References:
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://security.gentoo.org/glsa/201704-03
https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/
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