Auth bypass in Apple Mac OS X
CVE-2009-2422
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Apple Mac OS X — versions 10.5.8
- Apple Mac OS X Server — versions 10.5.8
- Rubyonrails Ruby On Rails
Weakness classification (CWE)
References
- secunia.com/advisories/35702 (Broken Link, Vendor Advisory, third-party-advisory)
- www.securityfocus.com/bid/35579 (Patch, VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- lists.apple.com/archives/security-announce/2010//Mar/msg00001.html (vendor-advisory, Mailing List)
- weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_di… (Patch)
- www.vupen.com/english/advisories/2009/1802 (Patch, vdb-entry, Broken Link, Vendor Advisory)
- support.apple.com/kb/HT4077 (Third Party Advisory)
- n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s (Exploit, Patch)
- exchange.xforce.ibmcloud.com/vulnerabilities/51528 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2009-2422?
- CVE-2009-2422 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Authentication. CVSS score: 9.8/10. Published 2009-07-10.
- How severe is CVE-2009-2422?
- Critical severity. CVSS v3 base score is 9.8 out of 10.