ruby: Incorrect checks for validity of X.509 certificates
Published Feb 18, 2009
6.8
MEDIUMCVSS 2.0
EPSS 2.64%
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
ruby-0:1.8.1-7.el4_8.3
Fixed · RHSA-2009:1140
Red Hat Enterprise Linux 5
ruby-0:1.8.5-5.el5_3.7
Fixed · RHSA-2009:1140
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | ruby-0:1.8.1-7.el4_8.3 | Fixed | RHSA-2009:1140 |
| Red Hat Enterprise Linux 5 | ruby-0:1.8.5-5.el5_3.7 | Fixed | RHSA-2009:1140 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.64% (0.02640) | 85.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.64% (0.02640) | 83.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.46% (0.01455) | 79.48th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.14% (0.02142) | 89.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.14% (0.02142) | 87.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528 x_refsource_MISC
- http://redmine.ruby-lang.org/issues/show/1091 x_refsource_CONFIRMExploit
- http://secunia.com/advisories/33750 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35699 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35937 third-party-advisoryx_refsource_SECUNIA
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:193 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2009-1140.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/33769 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1022505 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-805-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2009-0642 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=486183 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48761 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-0642
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11450 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-0642
Change history (0)
No recorded changes yet.