Moderate severityNVD Advisory· Published Sep 8, 2009· Updated Jun 16, 2026
CVE-2009-3086
CVE-2009-3086
Description
A certain algorithm in Ruby on Rails 2.1.0 through 2.2.2, and 2.3.x before 2.3.4, leaks information about the complexity of message-digest signature verification in the cookie store, which might allow remote attackers to forge a digest via multiple attempts.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
actionpackRubyGems | >= 2.1.0, < 2.2.3 | 2.2.3 |
actionpackRubyGems | >= 2.3.0, < 2.3.4 | 2.3.4 |
activesupportRubyGems | >= 2.1.0, < 2.2.3 | 2.2.3 |
activesupportRubyGems | >= 2.3.0, < 2.3.4 | 2.3.4 |
Affected products
10cpe:2.3:a:rubyonrails:rails:2.1.0:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:a:rubyonrails:rails:2.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:2.3.3:*:*:*:*:*:*:*
- ghsa-coords2 versions
>= 2.1.0, < 2.2.3+ 1 more
- (no CPE)range: >= 2.1.0, < 2.2.3
- (no CPE)range: >= 2.1.0, < 2.2.3
Patches
Vulnerability mechanics
References
16- weblog.rubyonrails.org/2009/9/4/timing-weakness-in-ruby-on-railsnvdPatchWEB
- www.vupen.com/english/advisories/2009/2544nvdVendor Advisory
- github.com/advisories/GHSA-fg9w-g6m4-557jghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2009-3086ghsaADVISORY
- lists.opensuse.org/opensuse-security-announce/2009-10/msg00004.htmlnvdWEB
- www.debian.org/security/2011/dsa-2260nvdWEB
- github.com/rails/rails/commit/1f07a89c5946910fc28ea5ccd1da6af8a0f972a0ghsaWEB
- github.com/rails/rails/commit/674f780d59a5a7ec0301755d43a7b277a3ad2978ghsaWEB
- github.com/rails/rails/commit/d460c9a25560f43e7c3789abadf7b455053eb686ghsaWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2009-3086.ymlghsaWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2009-3086.ymlghsaWEB
- web.archive.org/web/20090906010200/http://www.vupen.com/english/advisories/2009/2544ghsaWEB
- web.archive.org/web/20090907001716/http://secunia.com/advisories/36600ghsaWEB
- web.archive.org/web/20200229150042/http://www.securityfocus.com/bid/37427ghsaWEB
- secunia.com/advisories/36600nvd
- www.securityfocus.com/bid/37427nvd
News mentions
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