CVE-2009-2422
CRITICAL severity · CVSS 9.8 · Improper authentication
9.8CVSS CRITICAL
Summary
The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s ↗
Additional information
- NVD record
- http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3sPatch
- http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digestPatch
- http://www.securityfocus.com/bid/35579Patch
- http://www.vupen.com/english/advisories/2009/1802Patch
- http://secunia.com/advisories/35702Advisory
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://support.apple.com/kb/HT4077Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51528Advisory