CVE-2023-39350
Published: 31 August 2023
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Notes
| Author | Note |
|---|---|
Priority reason: Denial of service against FreeRDP client only. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
freerdp2 Launchpad, Ubuntu, Debian |
bionic |
Released
(2.2.0+dfsg1-0ubuntu0.18.04.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(2.2.0+dfsg1-0ubuntu0.20.04.5)
|
|
| jammy |
Released
(2.6.1+dfsg1-3ubuntu2.4)
|
|
| lunar |
Released
(2.10.0+dfsg1-1ubuntu0.2)
|
|
| mantic |
Released
(2.10.0+dfsg1-1.1ubuntu1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(2.11.0)
|
|
| xenial |
Ignored
(end of standard support)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |