CVE-2020-25697: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients

High severity · published May 26, 2021

CVE-2020-25697

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

7.0

CVSS

0.3%

EPSS

On KEV

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

High

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 24% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

X Server · X.org

All versions, or not specified · source: NVD

Affected product

X Server

X.org

All X Server CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-25697

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-25697

Mailing List

http://www.openwall.com/lists/oss-security/2020/11/09/3

Issue Tracking

https://bugzilla.redhat.com/show_bug.cgi?id=1895295

lists.apache.org

https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

Mailing List

https://seclists.org/oss-sec/2020/q4/105