ADVISORIES

• CVE-2009-3086 (NVD)
• GHSA-fg9w-g6m4-557j
• Vendor Advisory

GEM

activesupport

FRAMEWORK

Ruby on Rails

SEVERITY

CVSS v2.0: 5.0 (Medium)

UNAFFECTED VERSIONS

• < 2.1.0

PATCHED VERSIONS

• ~> 2.2.3
• >= 2.3.4

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.

RELATED

• https://nvd.nist.gov/vuln/detail/CVE-2009-3086
• http://weblog.rubyonrails.org/2009/9/4/timing-weakness-in-ruby-on-rails
• https://github.com/advisories/GHSA-fg9w-g6m4-557j
• http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00004.html
• http://www.debian.org/security/2011/dsa-2260
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2009-3086.yml
• https://github.com/rails/rails/commit/1f07a89c5946910fc28ea5ccd1da6af8a0f972a0
• https://github.com/rails/rails/commit/674f780d59a5a7ec0301755d43a7b277a3ad2978
• https://github.com/rails/rails/commit/d460c9a25560f43e7c3789abadf7b455053eb686
• https://web.archive.org/web/20090906010200/http://www.vupen.com/english/advisories/2009/2544
• https://web.archive.org/web/20090907001716/http://secunia.com/advisories/36600
• https://web.archive.org/web/20200229150042/http://www.securityfocus.com/bid/37427
• https://github.com/advisories/GHSA-fg9w-g6m4-557j