CVE-2023-40187
Published: 31 August 2023
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of the 3.x beta branch are subject to a Use-After-Free issue in the `avc420_ensure_buffer` and `avc444_ensure_buffer` functions. If the value of `piDstSize[x]` is 0, `ppYUVDstData[x]` will be freed. However, in this case `ppYUVDstData[x]` will not have been updated which leads to a Use-After-Free vulnerability. This issue has been addressed in version 3.0.0-beta3. Users of the 3.x beta releases are advised to upgrade. There are no known workarounds for this vulnerability.
Priority
Status
Package | Release | Status |
---|---|---|
freerdp2 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(2.2.0+dfsg1-0ubuntu0.18.04.4)
|
focal |
Not vulnerable
(2.2.0+dfsg1-0ubuntu0.20.04.4)
|
|
jammy |
Not vulnerable
(2.6.1+dfsg1-3ubuntu2.3)
|
|
lunar |
Not vulnerable
(2.10.0+dfsg1-1)
|
|
mantic |
Not vulnerable
(2.10.0+dfsg1-1.1)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Ignored
(end of standard support)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |