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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

AuthorNote
Priority reason:
Denial of service against FreeRDP client only.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
freerdp2
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
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)
upstream
Released (2.11.0)
mantic
Released (2.10.0+dfsg1-1.1ubuntu1)

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