The Rack::Cache rubygem 0.3.0 through 1.1 caches Set-Cookie and other sensitive headers, which allows attackers to obtain sensitive cookie information, hijack web sessions, or have other unspecified impact by accessing the cache.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-2671
• rtomayko/rack-cache#52
• rtomayko/rack-cache@2e3a64d
• https://bugzilla.redhat.com/show_bug.cgi?id=824520
• https://github.com/rtomayko/rack-cache/blob/master/CHANGES
• http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081812.html
• http://www.openwall.com/lists/oss-security/2012/06/06/4
• http://www.openwall.com/lists/oss-security/2012/06/06/8
• https://bugzilla.novell.com/show_bug.cgi?id=763650
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack-cache/CVE-2012-2671.yml