Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| X.Org | Libxdmcp | < 1.1.2 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.4 |
| Redhat | Enterprise Linux Server Eus | 7.4 |
| Redhat | Enterprise Linux Workstation | 7.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/96480Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037919Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1865Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625Issue TrackingThird Party Advisory
- https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1fThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
- https://security.gentoo.org/glsa/201704-03Third Party Advisory
- https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/ExploitThird Party Advisory
- http://www.securityfocus.com/bid/96480Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037919Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1865Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625Issue TrackingThird Party Advisory
- https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1fThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
- https://security.gentoo.org/glsa/201704-03Third Party Advisory
FAQ
What is CVE-2017-2625?
CVE-2017-2625 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...
How severe is CVE-2017-2625?
CVE-2017-2625 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-2625?
Check the references section above for vendor advisories and patch information. Affected products include: X.Org Libxdmcp, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus.