Home/CVE/A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw
CVE

CVE-2020-25697

A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw

A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.

HIGH · CVSS 7 EPSS 0.00049
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-306Missing Authentication for Critical Function
CWE-306Missing Authentication for Critical Function
▤

Affected Products & Versions

1
x.org x serverall versions
▣

Scoring & Timeline

7
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 May 2021 · 01:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

3
suse-csafopenSUSE-SU-2024:12993-1
suse-csafSUSE-SU-2023:3189-1
suse-csafSUSE-SU-2023:3190-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1895295Issue TrackingThird Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://seclists.org/oss-sec/2020/q4/105Mailing ListThird Party Advisory
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