Auth bypass in Ruby-Lang Ruby
CVE-2009-0642
ext/openssl/ossl_ocsp.c in Ruby 1.8 and 1.9 does not properly check the return value from the OCSP_basic_verify function, which might allow remote attackers to successfully present an invalid X.509 certificate, possibly involving a revoked certificate.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.026 (85.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 1.8, 1.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/35937 (third-party-advisory)
- redmine.ruby-lang.org/issues/show/1091 (Exploit)
- exchange.xforce.ibmcloud.com/vulnerabilities/48761 (vdb-entry)
- www.redhat.com/support/errata/RHSA-2009-1140.html (vendor-advisory)
- www.ubuntu.com/usn/USN-805-1 (vendor-advisory)
- www.securityfocus.com/bid/33769 (vdb-entry)
- www.securitytracker.com/id (vdb-entry)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:11450 (signature, vdb-entry)
- secunia.com/advisories/35699 (third-party-advisory)
- www.mandriva.com/security/advisories (vendor-advisory)
Frequently asked questions
- What is CVE-2009-0642?
- CVE-2009-0642 is a vulnerability in Ruby-Lang Ruby, classified under Improper Authentication. Published 2009-02-20.
- Is CVE-2009-0642 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.