Description
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.
Metrics
CVSS 2.0 5.1/10
AV:N/AC:H/Au:N/C:P/I:P/A:PAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://lists.opensuse.org/opensuse-updates/2013-03/msg00048.html
- http://rack.github.com/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2013-0686.html
- http://secunia.com/advisories/52033Vendor Advisory
- http://secunia.com/advisories/52134Vendor Advisory
- http://secunia.com/advisories/52774
- http://www.debian.org/security/2013/dsa-2783
- http://www.osvdb.org/89939
- https://bugzilla.redhat.com/show_bug.cgi?id=909071
- 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
- http://lists.opensuse.org/opensuse-updates/2013-03/msg00048.html
- http://rack.github.com/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2013-0686.html
- http://secunia.com/advisories/52033Vendor Advisory
- http://secunia.com/advisories/52134Vendor Advisory
- http://secunia.com/advisories/52774
- http://www.debian.org/security/2013/dsa-2783
- http://www.osvdb.org/89939
- https://bugzilla.redhat.com/show_bug.cgi?id=909071
- 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
Timeline
- Published
- Feb 8, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified