CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
15.9%
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead
to local privilege escalation. If a client explicitly destroys the
compositor overlay window (aka COW), the Xserver would leave a dangling
pointer to that window in the CompScreen structure, which will trigger a
use-after-free later.
Author | Note |
---|---|
mdeslaur | xorg server is actually the xorg-server package the xorg package only contains docs xwayland package contains parts of xorg-server This is ZDI-CAN-19866 tigervnc needs a no-change rebuild once xorg-server is fixed |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | tigervnc | < any | UNKNOWN |
ubuntu | 20.04 | noarch | tigervnc | < 1.10.1+dfsg-3ubuntu0.20.04.1 | UNKNOWN |
ubuntu | 22.04 | noarch | tigervnc | < 1.12.0+dfsg-4ubuntu0.22.04.1 | UNKNOWN |
ubuntu | 23.04 | noarch | tigervnc | < 1.12.0+dfsg-8ubuntu0.23.04.1 | UNKNOWN |
ubuntu | 23.10 | noarch | tigervnc | < 1.12.0+dfsg-8ubuntu0.23.10.1 | UNKNOWN |
ubuntu | 18.04 | noarch | xorg-server | < 2:1.19.6-1ubuntu4.15 | UNKNOWN |
ubuntu | 20.04 | noarch | xorg-server | < 2:1.20.13-1ubuntu1~20.04.8 | UNKNOWN |
ubuntu | 22.04 | noarch | xorg-server | < 2:21.1.3-2ubuntu2.9 | UNKNOWN |
ubuntu | 22.10 | noarch | xorg-server | < 2:21.1.4-2ubuntu1.7 | UNKNOWN |
ubuntu | 23.04 | noarch | xorg-server | < 2:21.1.7-1ubuntu3 | UNKNOWN |