CVE-2020-25697
First published: Fri Nov 06 2020(Updated: )
While X11 servers authenticate their clients, X11 clients *do not* authenticate the server. This can be exploited to take control of an X application by impersonating the server it is expecting to connect to.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| X.Org X Server |
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Reference Links
- https://www.openwall.com/lists/oss-security/2020/11/09/3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1896017
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1896018
- https://access.redhat.com/security/cve/cve-2020-25697
- https://bugzilla.redhat.com/show_bug.cgi?id=1895295
- http://www.openwall.com/lists/oss-security/2020/11/09/3
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://seclists.org/oss-sec/2020/q4/105
Frequently Asked Questions
What is CVE-2020-25697?
CVE-2020-25697 is a privilege escalation vulnerability found in the Xorg-x11-server due to a lack of authentication for X11 clients.
What is the severity of CVE-2020-25697?
CVE-2020-25697 has a severity rating of high.
How does CVE-2020-25697 work?
CVE-2020-25697 allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.
Which software is affected by CVE-2020-25697?
X.Org X Server is affected by CVE-2020-25697.
How can I fix CVE-2020-25697?
Ensure that you have the latest version of Xorg-x11-server installed, as the fix for CVE-2020-25697 may be included in an update.
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