Bug 1040266 (CVE-2013-7050)

Summary:	CVE-2013-7050 devscripts: code execution flaw in uscan
Product:	[Other] Security Response	Reporter:	Murray McAllister <mmcallis>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	manisandro
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-19 22:04:47 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:	1040267
Bug Blocks:

Description Murray McAllister 2013-12-11 04:28:35 UTC

A flaw was reported in the uscan script of devscripts:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=731849

From that bug report:

""
The newfangled debian/copyright-driven repacking can be exploited by
malicious upstream to execute arbitrary code.
""

The fix:

http://anonscm.debian.org/gitweb/?p=collab-maint/devscripts.git;a=commitdiff;h=91f05b5

devscripts is not included in Fedora 18 or 19. It looks to be part of rawhide/the upcoming Fedora 20.

Although some Debian stuff is bundled in the rpmdevtools package, uscan does not appear to be.

Comment 1 Murray McAllister 2013-12-11 04:30:37 UTC

Created devscripts tracking bugs for this issue:

Affects: fedora-rawhide [bug 1040267]

Comment 2 Murray McAllister 2013-12-11 04:34:37 UTC

CVE request: http://www.openwall.com/lists/oss-security/2013/12/11/1

Comment 3 Vincent Danen 2013-12-13 18:16:02 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2013-7050 to
the following vulnerability:

Name: CVE-2013-7050
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7050
Assigned: 20131211
Reference: http://seclists.org/oss-sec/2013/q4/470
Reference: http://seclists.org/oss-sec/2013/q4/486
Reference: http://anonscm.debian.org/gitweb/?p=collab-maint/devscripts.git;a=commitdiff;h=91f05b5
Reference: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=731849
Reference: http://www.securityfocus.com/bid/64241

The get_main_source_dir function in scripts/uscan.pl in devscripts
before 2.13.8, when using USCAN_EXCLUSION, allows remote attackers to
execute arbitrary commands via shell metacharacters in a directory
name.

Comment 4 Fedora Update System 2013-12-21 02:17:19 UTC

devscripts-2.13.5-2.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.