CVE-2012-6109
First published: Fri May 04 2012(Updated: )
`lib/rack/multipart.rb` in Rack before 1.1.4, 1.2.x before 1.2.6, 1.3.x before 1.3.7, and 1.4.x before 1.4.2 uses an incorrect regular expression, which allows remote attackers to cause a denial of service (infinite loop) via a crafted Content-Disposion header.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/rack | >=1.4.0<1.4.2 | 1.4.2 |
| rubygems/rack | >=1.3.0<1.3.7 | 1.3.7 |
| rubygems/rack | >=1.2.0<1.2.6 | 1.2.6 |
| rubygems/rack | <1.1.4 | 1.1.4 |
| redhat/rubygem-activesupport | <1:3.0.10-10.el6cf | 1:3.0.10-10.el6cf |
| redhat/rubygem-nokogiri | <0:1.5.0-0.9.beta4.el6cf | 0:1.5.0-0.9.beta4.el6cf |
| redhat/rubygem-rack | <1:1.3.0-3.el6cf | 1:1.3.0-3.el6cf |
| redhat/rubygem-rdoc | <0:3.8-6.el6cf | 0:3.8-6.el6cf |
| redhat/rubygem-rspec-rails | <0:2.6.1-7.el6cf | 0:2.6.1-7.el6cf |
| redhat/rubygem-shoulda | <0:2.11.3-5.el6cf | 0:2.11.3-5.el6cf |
| redhat/apache-commons-codec | <0:1.7-2.el6_3 | 0:1.7-2.el6_3 |
| redhat/apache-mime4j | <0:0.6-4_redhat_1.ep6.el6.1 | 0:0.6-4_redhat_1.ep6.el6.1 |
| redhat/candlepin | <0:0.7.23-1.el6_3 | 0:0.7.23-1.el6_3 |
| redhat/elasticsearch | <0:0.19.9-5.el6_3 | 0:0.19.9-5.el6_3 |
| redhat/katello | <0:1.2.1-15h.el6_3 | 0:1.2.1-15h.el6_3 |
| redhat/katello-certs-tools | <0:1.2.1-1h.el6_3 | 0:1.2.1-1h.el6_3 |
| redhat/katello-cli | <0:1.2.1-12h.el6_3 | 0:1.2.1-12h.el6_3 |
| redhat/katello-configure | <0:1.2.3-3h.el6_3 | 0:1.2.3-3h.el6_3 |
| redhat/katello-selinux | <0:1.2.1-2h.el6_3 | 0:1.2.1-2h.el6_3 |
| redhat/lucene3 | <0:3.6.1-10h.el6_3 | 0:3.6.1-10h.el6_3 |
| redhat/puppet | <0:2.6.17-2.el6cf | 0:2.6.17-2.el6cf |
| redhat/quartz | <0:2.1.5-4.el6_3 | 0:2.1.5-4.el6_3 |
| redhat/rubygem-apipie-rails | <0:0.0.12-2.el6cf | 0:0.0.12-2.el6cf |
| redhat/rubygem-mail | <0:2.3.0-3.el6cf | 0:2.3.0-3.el6cf |
| redhat/sigar | <0:1.6.5-0.12.git58097d9h.el6_3 | 0:1.6.5-0.12.git58097d9h.el6_3 |
| redhat/snappy-java | <0:1.0.4-2.el6_3 | 0:1.0.4-2.el6_3 |
| redhat/thumbslug | <0:0.0.28-1.el6_3 | 0:0.0.28-1.el6_3 |
| Rack-Project Rack | <=1.1.3 | |
| Rack-Project Rack | =0.1 | |
| Rack-Project Rack | =0.2 | |
| Rack-Project Rack | =0.3 | |
| Rack-Project Rack | =0.4 | |
| Rack-Project Rack | =0.9 | |
| Rack-Project Rack | =0.9.1 | |
| Rack-Project Rack | =1.0.0 | |
| Rack-Project Rack | =1.0.1 | |
| Rack-Project Rack | =1.1.0 | |
| Rack-Project Rack | =1.1.2 | |
| Rack-Project Rack | =1.2.0 | |
| Rack-Project Rack | =1.2.1 | |
| Rack-Project Rack | =1.2.2 | |
| Rack-Project Rack | =1.2.3 | |
| Rack-Project Rack | =1.2.4 | |
| Rack-Project Rack | =1.3.0 | |
| Rack-Project Rack | =1.3.1 | |
| Rack-Project Rack | =1.3.2 | |
| Rack-Project Rack | =1.3.3 | |
| Rack-Project Rack | =1.3.4 | |
| Rack-Project Rack | =1.3.5 | |
| Rack-Project Rack | =1.3.6 | |
| Rack-Project Rack | =1.4.0 | |
| Rack-Project Rack | =1.4.1 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2012-6109
- https://github.com/rack/rack/commit/c9f65df37a151821eb88ddd1dc404b83e52c52d5
- https://bugzilla.redhat.com/show_bug.cgi?id=895277
- https://github.com/rack/rack/blob/master/README.rdoc
- https://groups.google.com/forum/#!msg/rack-devel/1w4_fWEgTdI/XAkSNHjtdTsJ
- https://access.redhat.com/errata/RHSA-2013:0544
- https://access.redhat.com/security/cve/CVE-2012-6109
- https://groups.google.com/forum/#%21msg/rack-devel/1w4_fWEgTdI/XAkSNHjtdTsJ
- https://rhn.redhat.com/errata/RHSA-2013-0544.html
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2012-6109.yml
- https://github.com/advisories/GHSA-h77x-m5q8-c29h (Advisory)
- https://www.cve.org/CVERecord?id=CVE-2012-6109 https://nvd.nist.gov/vuln/detail/CVE-2012-6109
- https://access.redhat.com/errata/RHSA-2013:0548
- http://rack.github.com/
- http://rhn.redhat.com/errata/RHSA-2013-0544.html
- http://rhn.redhat.com/errata/RHSA-2013-0548.html
- https://github.com/rack/rack/commit/4fc44671b3cad569421f4f8b775c0590b86f575e
- https://groups.google.com/forum/#!topic/rack-devel/ImYOqcGiksw/discussion
- https://github.com/rack/rack/commit/0c76175fcccad74ba2f991c487d3669c28a297c8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=895285
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=771152
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=895384
- https://rhn.redhat.com/errata/RHSA-2013-0548.html
Frequently Asked Questions
What is the severity of CVE-2012-6109?
CVE-2012-6109 has a severity rating that indicates a denial of service vulnerability that can lead to an infinite loop.
How do I fix CVE-2012-6109?
To fix CVE-2012-6109, upgrade Rack to version 1.1.4 or later, or to the appropriate patched version for your installation.
What versions of Rack are affected by CVE-2012-6109?
CVE-2012-6109 affects Rack versions before 1.1.4, 1.2.x before 1.2.6, 1.3.x before 1.3.7, and 1.4.x before 1.4.2.
Can CVE-2012-6109 cause a website to crash?
Yes, CVE-2012-6109 can allow remote attackers to cause a denial of service, potentially crashing the affected application.
Is CVE-2012-6109 exploitable without authentication?
CVE-2012-6109 can be exploited without authentication, making it a significant risk for publicly accessible servers.
- collector/github-advisory-latest
- alias/GHSA-h77x-m5q8-c29h
- alias/CVE-2012-6109
- collector/redhat-cve
- collector/github-advisory
- agent/type
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- collector/redhat-bugzilla
- source/Red Hat
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/references
- agent/description
- agent/event
- agent/trending
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-cve
- agent/author
- agent/softwarecombine
- package-manager/rubygems
- package-manager/redhat
- vendor/rack project
- canonical/rack-project rack
- version/rack-project rack/1.1.3
- version/rack-project rack/0.1
- version/rack-project rack/0.2
- version/rack-project rack/0.3
- version/rack-project rack/0.4
- version/rack-project rack/0.9
- version/rack-project rack/0.9.1
- version/rack-project rack/1.0.0
- version/rack-project rack/1.0.1
- version/rack-project rack/1.1.0
- version/rack-project rack/1.1.2
- version/rack-project rack/1.2.0
- version/rack-project rack/1.2.1
- version/rack-project rack/1.2.2
- version/rack-project rack/1.2.3
- version/rack-project rack/1.2.4
- version/rack-project rack/1.3.0
- version/rack-project rack/1.3.1
- version/rack-project rack/1.3.2
- version/rack-project rack/1.3.3
- version/rack-project rack/1.3.4
- version/rack-project rack/1.3.5
- version/rack-project rack/1.3.6
- version/rack-project rack/1.4.0
- version/rack-project rack/1.4.1