National Cyber Awareness System
Vulnerability Summary for CVE-2013-0263
Original release date:02/08/2013
Last revised:05/15/2013
Source:
US-CERT/NIST
Overview
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 am HMAC comparison function that does not run in constant time.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
References to Advisories, Solutions, and Tools
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External Source: MISC
Name: https://twitter.com/coda/statuses/299732877745197056
External Source: CONFIRM
Name: https://groups.google.com/forum/#!msg/rack-devel/RnQxm6i13C4/xfakH81yWvgJ
External Source: CONFIRM
Name: https://groups.google.com/forum/#!msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ
External Source: CONFIRM
Name: https://groups.google.com/forum/#!msg/rack-devel/hz-liLb9fKE/8jvVWU6xYiYJ
External Source: CONFIRM
Name: https://groups.google.com/forum/#!msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ
External Source: CONFIRM
Name: https://groups.google.com/d/msg/rack-devel/xKrHVWeNvDM/4ZGA576CnK4J
External Source: CONFIRM
Name: https://github.com/rack/rack/commit/9a81b961457805f6d1a5c275d053068440421e11
External Source: CONFIRM
Name: https://github.com/rack/rack/commit/0cd7e9aa397f8ebb3b8481d67dbac8b4863a7f07
External Source: MISC
Name: https://gist.github.com/codahale/f9f3781f7b54985bee94
External Source: MISC
Name: https://bugzilla.redhat.com/show_bug.cgi?id=909071
External Source: OSVDB
Name: 89939
External Source: SECUNIA
Name: 52774
External Source: SECUNIA
Name: 52134
Type: Advisory
External Source: SECUNIA
Name: 52033
Type: Advisory
External Source: REDHAT
Name: RHSA-2013:0686
External Source: CONFIRM
Name: http://rack.github.com/
Type: Advisory
External Source: SUSE
Name: openSUSE-SU-2013:0462
