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veracodeVeracode Vulnerability DatabaseVERACODE:44507
HistoryNov 30, 2023 - 6:35 p.m.

Use After Free

2023-11-3018:35:01
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
14
xorg-server
use after free
zaphod mode
multi-screen setup
server crash
denial of service

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.1

Confidence

High

EPSS

0

Percentile

16.7%

xorg-server is vulnerable to Use After Free. The vulnerability is caused when using X server in Zaphod mode (a multi-screen setup with multiple protocol screens) when the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. This can lead to server crash resulting in Denial Of Service (DOS).

References

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.1

Confidence

High

EPSS

0

Percentile

16.7%