Bug 1403177 (CVE-2016-9920)

Summary:	CVE-2016-9920 roundcubemail: Code execution via mail()
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	christoph.wickert, fedora, gwync, mhlavink, pokorra.mailinglists, tmraz
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	roundcubemail 1.2.3, roundcubemail 1.1.7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-01-31 10:17:58 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:	1403178, 1403179
Bug Blocks:

Description Andrej Nemec 2016-12-09 10:57:10 UTC

steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before
1.2.3, when no SMTP server is configured and the sendmail program is
enabled, does not properly restrict the use of custom envelope-from
addresses on the sendmail command line, which allows remote
authenticated users to execute arbitrary code via a modified HTTP
request that sends a crafted e-mail message.

References:

https://blog.ripstech.com/2016/roundcube-command-execution-via-email/
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released

Upstream patches:

https://github.com/roundcube/roundcubemail/commit/aa6bf38843f51a0fc7205acc98a7b84f3c4c9c4f
https://github.com/roundcube/roundcubemail/commit/45a3e81653eb6ad3685d1a9ab817a61df78178eb

CVE assignment:

http://seclists.org/oss-sec/2016/q4/642

Comment 1 Andrej Nemec 2016-12-09 10:58:00 UTC

Created roundcubemail tracking bugs for this issue:

Affects: fedora-all [bug 1403178]
Affects: epel-all [bug 1403179]