Bug 2364868 (CVE-2025-46551) - CVE-2025-46551 jruby-openssl: jruby: JRuby-OpenSSL has hostname verification disabled by default
Summary: CVE-2025-46551 jruby-openssl: jruby: JRuby-OpenSSL has hostname verification ...
Keywords:
Status: NEW
Alias: CVE-2025-46551
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On: 2364898 2364899 2364897
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-07 17:01 UTC by OSIDB Bzimport
Modified: 2025-05-07 20:22 UTC (History)
75 users (show)

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Description OSIDB Bzimport 2025-05-07 17:01:08 UTC 
JRuby-OpenSSL is an add-on gem for JRuby that emulates the Ruby OpenSSL native library. Starting in JRuby-OpenSSL version 0.12.1 and prior to version 0.15.4 (corresponding to JRuby versions starting in 9.3.4.0 prior to 9.4.12.1 and 10.0.0.0 prior to 10.0.0.1), when verifying SSL certificates, JRuby-OpenSSL does not verify that the hostname presented in the certificate matches the one the user tries to connect to. This means a man-in-the-middle could just present any valid cert for a completely different domain they own, and JRuby would accept the cert. Anybody using JRuby to make requests of external APIs, or scraping the web, that depends on https to connect securely. JRuby-OpenSSL version 0.15.4 contains a fix for the issue. This fix is included in JRuby versions 10.0.0.1 and 9.4.12.1.
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