Bug 885130 (CVE-2012-6137)

Summary: CVE-2012-6137 subscription-manager: rhn-migrate-classic-to-rhsm missing SSL certificate verification
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Nobody <nobody>
Status: ASSIGNED --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bkearney, candlepin-bugs, fweimer, jsefler, ktordeur
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 918967, 918968, 918969, 918970, 960257    
Bug Blocks: 885150    
Attachments:
Description Flags
A fix for this issue none

Description Jan Lieskovsky 2012-12-07 14:58:42 UTC 
A security flaw was found in the way rhn-migrate-classic-to-rhsm tool of subscription-manager, a suite of tools and libraries for subscription and repository management, performed migration of system profiles, registered with Red Hat Network Classic to Customer Portal Subscription Management (certificate of Red Hat Network Classic server was not verified for validity). A rogue server could use this flaw to conduct man-in-the-middle (MiTM) attacks, possibly leading to their ability to obtain user credentials, that would be used for authentication of that particular user at Red Hat Network Classic server before the system profile(s) migration.

This issue was found by Florian Weimer of Red Hat Product Security Team.
Comment 1 Jan Lieskovsky 2012-12-07 15:03:15 UTC 
This issue affects the versions of the subscription-manager package, as shipped with Red Hat Enterprise Linux 5 and 6.

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This issue (the conceptuality of upcoming change) affects the versions of the subscription-manager package, as shipped with Fedora release of 16 and 17.
Comment 2 Alex Wood 2013-02-26 21:03:42 UTC 
Forgive me if I'm being obtuse, but could you provide a little more information on the bug?  I assume you're talking about certificate verification in the connect_to_rhn() method.  Does xmlrpclib not do certificate verification when a https link is passed in?
Comment 4 Tomas Hoger 2013-02-27 19:59:22 UTC 
(In reply to comment #2)
> Does xmlrpclib not do certificate verification when a https link is passed in?

Correct, python xmlrpc lib does not check certificates when it's given https url.
Comment 9 Alex Wood 2013-03-01 17:20:06 UTC 
Created attachment 704258 [details]
A fix for this issue
Comment 11 Stefan Cornelius 2013-03-07 08:56:51 UTC 
This has been assigned CVE-2012-6137.
Comment 19 Vincent Danen 2013-05-06 19:39:10 UTC 
Created subscription-manager tracking bugs for this issue

Affects: fedora-all [bug 960257]
Comment 20 errata-xmlrpc 2013-05-06 19:43:40 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2013:0788 https://rhn.redhat.com/errata/RHSA-2013-0788.html