Bug 1670393 (CVE-2018-8797)

Summary:	CVE-2018-8797 rdesktop: Remote code execution in process_plane
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	oholy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	rdesktop 1.8.4	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-02-18 06:36:07 UTC	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:	1670427
Bug Blocks:	1667054

Description Pedro Sampaio 2019-01-29 13:31:50 UTC

A flaw was found in rdesktop before 1.8.4. A issue in process_plane function may lead to remote code execution.

Upstream patch:

https://github.com/rdesktop/rdesktop/commit/766ebcf6f23ccfe8323ac10242ae6e127d4505d2
https://github.com/rdesktop/rdesktop/releases/tag/v1.8.4

Comment 1 Pedro Sampaio 2019-01-29 14:03:07 UTC

Created rdesktop tracking bugs for this issue:

Affects: fedora-all [bug 1670427]

Comment 2 Huzaifa S. Sidhpurwala 2019-02-18 06:36:07 UTC

Note:

You need to connect to a malicious or a MITM RDP server in order to trigger this flaw. The malicious RDP server can cause a controlled buffer overflow on the client, which may result in code execution. However since the flaw can only be triggered by a specially crafted RDP server, this is rated as having moderate security impact.