CVE-2009-4123 json
jruby-openssl gem for JRuby fails to do proper certificate validation
published 3y ago modified 4mo ago also GHSA-xgv7-pqqh-h2w9 , EUVD-2023-0588
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
The jruby-openssl gem before 0.6 for JRuby mishandles SSL certificate validation.
Patch / fix
- rubygems jruby-openssl 0.6
- jruby jruby-openssl 0.6
Is CVE-2009-4123 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-14).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | jruby-openssl | <0.6 |
0.6 |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
github.com
/advisories/GHSA-xgv7-pqqh-h2w9
advisory, vendor-advisory
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/jruby-openssl/CVE-2009-4123.yml
web, vendor-advisory
-
web.archive.org
/web/20101213091125/http://jruby.org/2009/12/07/vulnerability-in-jruby-openssl
web, vendor-advisory
-
jruby.org
/2009/12/07/vulnerability-in-jruby-openssl
web, broken-link
-
nvd.nist.gov
/vuln/detail/CVE-2009-4123
advisory
-
github.com
/jruby/jruby-openssl
web
Sources
- CVE List CVE-2009-4123
- GitHub Advisory GHSA-xgv7-pqqh-h2w9
- NVD CVE-2009-4123
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.