Bug 895277 (CVE-2012-6109) - CVE-2012-6109 rubygem-rack: parsing Content-Disposition header DoS
Summary: CVE-2012-6109 rubygem-rack: parsing Content-Disposition header DoS
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-6109
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 771152 895285 895397 895398 895400 895401 995680 1165360
Blocks: 892883 895284 906653
TreeView+ depends on / blocked
 
Reported: 2013-01-14 23:48 UTC by Vincent Danen
Modified: 2019-09-29 12:58 UTC (History)
25 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-11-24 16:25:31 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0544 0 normal SHIPPED_LIVE Important: Subscription Asset Manager 1.2 update 2013-02-26 04:08:04 UTC
Red Hat Product Errata RHSA-2013:0548 0 normal SHIPPED_LIVE Moderate: CloudForms Common 1.1.2 update 2013-02-22 00:00:32 UTC

Description Vincent Danen 2013-01-14 23:48:12 UTC 
Upstream released [1] Rack 1.4.2, 1.3.7, 1.2.6, and 1.1.4 to fix a denial of service condition when Rack parses content with a certain Content-Disposition header as noted in the original report [2].

This has been fixed in git [3].

Additionally, a second flaw that was fixed in 1.4.4, 1.3.9, 1.2.7, and 1.1.5 was also announced [4] that creates a minor denial of service condition, this time in the Rack::Auth::AbstractRequest, where it symbolized arbitrary strings (apparently this has something to do with authentication, but there is no further information provided other than the fix [5] itself, which is noted as "a breaking API change").

[1] http://rack.github.com/
[2] https://groups.google.com/forum/#!msg/rack-devel/1w4_fWEgTdI/XAkSNHjtdTsJ
[3] https://github.com/rack/rack/commit/4fc44671b3cad569421f4f8b775c0590b86f575e
[4] https://groups.google.com/forum/#!topic/rack-devel/ImYOqcGiksw/discussion
[5] https://github.com/rack/rack/commit/0c76175fcccad74ba2f991c487d3669c28a297c8
Comment 1 Vincent Danen 2013-01-15 00:22:06 UTC 
Created rubygem-rack tracking bugs for this issue

Affects: fedora-all [bug 895285]
Comment 2 Vincent Danen 2013-01-15 00:23:41 UTC 
Created rubygem-rack tracking bugs for this issue

Affects: epel-all [bug 771152]
Comment 3 Kurt Seifried 2013-01-15 07:30:41 UTC 
This bug now refers only to:

Upstream released [1] Rack 1.4.2, 1.3.7, 1.2.6, and 1.1.4 to fix a denial of service condition when Rack parses content with a certain Content-Disposition header as noted in the original report [2].

This has been fixed in git [3].

[1] http://rack.github.com/
[2] https://groups.google.com/forum/#!msg/rack-devel/1w4_fWEgTdI/XAkSNHjtdTsJ
[3] https://github.com/rack/rack/commit/4fc44671b3cad569421f4f8b775c0590b86f575e

The second flaw was split into bz 895384
Comment 8 John Eckersberg 2013-01-16 16:18:26 UTC 
This is the correct patch for rack-1.3: https://github.com/rack/rack/commit/c9f65df37a151821eb88ddd1dc404b83e52c52d5
Comment 9 Fedora Update System 2013-01-25 21:33:46 UTC 
rubygem-rack-1.3.0-3.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2013-01-25 21:37:25 UTC 
rubygem-rack-1.4.0-4.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2013-01-25 21:43:35 UTC 
rubygem-rack-1.4.0-3.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 12 errata-xmlrpc 2013-02-21 19:05:26 UTC 
This issue has been addressed in following products:

  CloudForms for RHEL 6

Via RHSA-2013:0548 https://rhn.redhat.com/errata/RHSA-2013-0548.html
Comment 13 errata-xmlrpc 2013-02-21 19:21:28 UTC 
This issue has been addressed in following products:

  Red Hat Subscription Asset Manager 1.2

Via RHSA-2013:0544 https://rhn.redhat.com/errata/RHSA-2013-0544.html
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