CVE-2013-0263 The advisory has been revoked - it doesn't affect any version of package rubygem-rack (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-RUBYGEMRACK-9867424
- published28 Apr 2025
- disclosed8 Feb 2013
Introduced: 8 Feb 2013
CVE-2013-0263 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rubygem-rack package and not the rubygem-rack package as distributed by RHEL.
Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x before 1.1.6 allows remote attackers to guess the session cookie, gain privileges, and execute arbitrary code via a timing attack involving an HMAC comparison function that does not run in constant time.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=909071
- https://access.redhat.com/security/cve/CVE-2013-0263
- https://groups.google.com/forum/#!msg/rack-devel/RnQxm6i13C4/xfakH81yWvgJ
- https://groups.google.com/forum/#!msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ
- https://groups.google.com/forum/#!msg/rack-devel/hz-liLb9fKE/8jvVWU6xYiYJ
- https://groups.google.com/forum/#!msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ
- http://lists.opensuse.org/opensuse-updates/2013-03/msg00048.html
- http://rack.github.com/
- http://rhn.redhat.com/errata/RHSA-2013-0686.html
- http://secunia.com/advisories/52033
- http://secunia.com/advisories/52134
- http://secunia.com/advisories/52774
- http://www.debian.org/security/2013/dsa-2783
- http://www.osvdb.org/89939
- https://gist.github.com/codahale/f9f3781f7b54985bee94
- https://github.com/rack/rack/commit/0cd7e9aa397f8ebb3b8481d67dbac8b4863a7f07
- https://github.com/rack/rack/commit/9a81b961457805f6d1a5c275d053068440421e11
- https://groups.google.com/d/msg/rack-devel/xKrHVWeNvDM/4ZGA576CnK4J
- https://groups.google.com/forum/#%21msg/rack-devel/RnQxm6i13C4/xfakH81yWvgJ
- https://groups.google.com/forum/#%21msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ
- https://groups.google.com/forum/#%21msg/rack-devel/hz-liLb9fKE/8jvVWU6xYiYJ
- https://groups.google.com/forum/#%21msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ
- https://puppet.com/security/cve/cve-2013-0263
- https://twitter.com/coda/statuses/299732877745197056