Vulnerability Details : CVE-2017-2625
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.
Products affected by CVE-2017-2625
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:libxdmcp:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2625
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2625
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
2.0
|
4.0
|
Red Hat, Inc. |
CWE ids for CVE-2017-2625
-
Assigned by: nvd@nist.gov (Secondary)
-
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.Assigned by: secalert@redhat.com (Primary)
References for CVE-2017-2625
-
http://www.securitytracker.com/id/1037919
X Multiple Flaws Let Local Users Conduct Timing and Key Guessing Attacks Obtain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2017:1865
Third Party Advisory
-
https://security.gentoo.org/glsa/201704-03
X.Org: Multiple vulnerabilities (GLSA 201704-03) — Gentoo securityThird Party Advisory
-
https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/
Advisory X41-2017-001: Multiple Vulnerabilities in X.org | X41 D-SEC GmbHExploit;Third Party Advisory
-
https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f
xorg/lib/libXdmcp - X Display Manager Control Protocol routines (mirrored from https://gitlab.freedesktop.org/xorg/lib/libxdmcp)Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
[SECURITY] [DLA 2006-1] libxdmcp security update
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625
1424987 – (CVE-2017-2625) CVE-2017-2625 libXdmcp: weak entropy usage for session keysIssue Tracking;Third Party Advisory
-
http://www.securityfocus.com/bid/96480
X.org X Server Local Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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