Bug 1319768 – CVE-2016-3068 mercurial: command injection via git subrepository urls

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Bug 1319768 - (CVE-2016-3068) CVE-2016-3068 mercurial: command injection via git subrepository urls

Summary:	CVE-2016-3068 mercurial: command injection via git subrepository urls

Status:	CLOSED ERRATA

Aliases:	CVE-2016-3068

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=important,public=20160329,repo...
Keywords:	Security

Duplicates:	1322266 (view as bug list)
Depends On:	1322268 1323599 1327167 1327168
Blocks:	1319772 1322269
	Show dependency tree / graph

Reported:	2016-03-21 09:27 EDT by Adam Mariš
Modified:	2016-11-08 10:53 EST (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	mercurial 3.7.3
Doc Type:	Bug Fix
Doc Text:	It was discovered that Mercurial failed to properly check Git sub-repository URLs. A Mercurial repository that includes a Git sub-repository with a specially crafted URL could cause Mercurial to execute arbitrary code.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-05-02 09:02:14 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:0706	normal	SHIPPED_LIVE	Important: mercurial security update	2016-05-02 12:57:46 EDT

Groups: None (edit)

Description Adam Mariš 2016-03-21 09:27:43 EDT

It was reported that in mercurial, there is similar vulnerability as CVE-2015-7545 in git. Git's git-remote-ext remote helper provides an ext:: URL scheme that allows running arbitrary shell commands. Mercurial allows specifying git repositories as subrepositories. Git ext:: URLs can be specified as Mercurial subrepositories allowing arbitrary shell commands to be run on `hg clone ...`.

Comment 1 Adam Mariš 2016-03-21 09:27:47 EDT

Acknowledgments:

Name: Blake Burkhart

Comment 3 Adam Mariš 2016-04-04 04:08:02 EDT

*** Bug 1322266 has been marked as a duplicate of this bug. ***

Comment 4 Adam Mariš 2016-04-04 04:10:38 EDT

External references:

https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_3.7.3_.282016-3-29.29

Upstream fix:

https://selenic.com/repo/hg-stable/rev/34d43cb85de8

Comment 5 Adam Mariš 2016-04-04 04:13:12 EDT

Created mercurial tracking bugs for this issue:

Affects: fedora-all [bug 1323599]

Comment 6 Tomas Hoger 2016-04-14 07:27:31 EDT

Support for git subrepos was introduced upstream in mercurial version 1.8:

https://www.mercurial-scm.org/wiki/WhatsNew/Archive#Mercurial_1.8_.282011-03-01.29

Therefore, mercurial packages in Red Hat Enterprise Linux 6 based on upstream version 1.4 were not affected by this issue.

Comment 13 errata-xmlrpc 2016-05-02 08:58:09 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0706 https://rhn.redhat.com/errata/RHSA-2016-0706.html

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