CVE-2009-2422
9.8
CRITICAL · CVSS 3.1 · EPSS 3.4% (pctl 88)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.38% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-287 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2009-07-10 |
| Last modified | 2026-06-16 |
Affected (3)
| Vendor | Product |
|---|---|
| apple | mac os x |
| apple | mac os x server |
| rubyonrails | ruby on rails |
References
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s
- http://secunia.com/advisories/35702
- http://support.apple.com/kb/HT4077
- http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest
- http://www.securityfocus.com/bid/35579
- http://www.vupen.com/english/advisories/2009/1802
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51528
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s
- http://secunia.com/advisories/35702
- http://support.apple.com/kb/HT4077
- http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest
- http://www.securityfocus.com/bid/35579
- http://www.vupen.com/english/advisories/2009/1802
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51528
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