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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…
Medium6.8EPSS 2.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 2.6% · top 14% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (12)
- 35937 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://redmine.ruby-lang.org/issues/show/1091 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ruby-ocspbasicverify-spoofing(48761) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- RHSA-2009:1140 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-805-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 33769 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1022505 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- oval:org.mitre.oval:def:11450 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 35699 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDVSA-2009:193 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528 (opens in a new tab)x_refsource_MISCx_transferred
- 33750 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-0642)Record last updated .