CVE-2009-0642: ruby-lang ruby Improper Authentication
CVSS: 6.8v2.0MediumModified
Published 18-02-2009Last modified 07-08-2024
Vulnerability summary
CVE-2009-0642 is a medium (CVSS 6.8) Improper Authentication vulnerability in ruby-lang ruby. EPSS estimates a 2.64% chance of exploitation in the next 30 days, higher than 85.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.8/10
010
Medium · v2.0 (NVD)EPSS score
2.64%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 2Timeline
- 18-02-2009PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionMedium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.64%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.64% on 20-09-2026
20-09-202620-10-2026
EPSS score2.64%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (redmine.ruby-lang.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ruby-lang1 product
- ruby1.8 | 1.9
1 vendor · 1 product
References
12 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11450VDB EntrySignatureX Refsource OVAL
Show all 12 references
bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528X Refsource MISC