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Bug 895277 - (CVE-2012-6109) CVE-2012-6109 rubygem-rack: parsing Content-Disposition header DoS
CVE-2012-6109 rubygem-rack: parsing Content-Disposition header DoS
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20120504,repor...
: Security
Depends On: 771152 895285 895397 895398 895400 895401 995680 1165360
Blocks: 892883 895284 906653
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Reported: 2013-01-14 18:48 EST by Vincent Danen
Modified: 2014-11-25 05:22 EST (History)
25 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2014-11-24 11:25:31 EST
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RHEL 7.3 requirements from Atomic Host:


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Description Vincent Danen 2013-01-14 18:48:12 EST
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 2013-01-14 19:22:06 EST
Created rubygem-rack tracking bugs for this issue

Affects: fedora-all [bug 895285]
Comment 2 Vincent Danen 2013-01-14 19:23:41 EST
Created rubygem-rack tracking bugs for this issue

Affects: epel-all [bug 771152]
Comment 3 Kurt Seifried 2013-01-15 02:30:41 EST
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 11:18:26 EST
This is the correct patch for rack-1.3: https://github.com/rack/rack/commit/c9f65df37a151821eb88ddd1dc404b83e52c52d5
Comment 9 Fedora Update System 2013-01-25 16:33:46 EST
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 16:37:25 EST
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 16:43:35 EST
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 14:05:26 EST
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 14:21:28 EST
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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