Bug 2236718 (CVE-2023-40574)

Summary:	CVE-2023-40574 freerdp: Out-Of-Bounds Write in general_YUV444ToRGB_8u_P3AC4R_BGRX
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	desktop-qa-list, oholy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	freerdp 3.0.0-beta3	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in FreeRDP. Incorrect calculations of the `nHeight` and `srcStep` variables may allow for an out-of-bounds write, leading to a crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2236719, 2236720
Bug Blocks:	2236652

Description Marian Rehak 2023-09-01 10:55:34 UTC

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the `writePixelBGRX` function. This issue is likely down to incorrect calculations of the `nHeight` and `srcStep` variables. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-422p-gj6x-93cw
https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/primitives/prim_YUV.c#L414-L445

Comment 2 Ondrej Holy 2023-09-01 14:06:49 UTC

The upstream report says that this vulnerability affects just version 3. But freerdp 3 isn't included in Fedora, or RHEL. So I think that this can be closed, can't be?