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CVE-2013-0263
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…
Medium5.1EPSS 5.4%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 5.4% · top 7.3% of all CVEs (3 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.
Weakness
- n/a
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsrackGHSA-xc85-32mf-xpv8 (opens in a new tab)
References (19)
- 52774 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/RnQxm6i13C4/xfakH81yWvgJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/rack/rack/commit/9a81b961457805f6d1a5c275d053068440421e11 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52033 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://github.com/rack/rack/commit/0cd7e9aa397f8ebb3b8481d67dbac8b4863a7f07 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://rack.github.com/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52134 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://groups.google.com/d/msg/rack-devel/xKrHVWeNvDM/4ZGA576CnK4J (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=909071 (opens in a new tab)x_refsource_MISCx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/hz-liLb9fKE/8jvVWU6xYiYJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2013:0686 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2013:0462 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://puppet.com/security/cve/cve-2013-0263 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://gist.github.com/codahale/f9f3781f7b54985bee94 (opens in a new tab)x_refsource_MISCx_transferred
- https://twitter.com/coda/statuses/299732877745197056 (opens in a new tab)x_refsource_MISCx_transferred
- 89939 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- DSA-2783 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-xc85-32mf-xpv8 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2013-0263)Record last updated .