CVE-2009-4123
First published: Thu Jan 19 2023(Updated: )
A security problem involving peer certificate verification was found where failed verification silently did nothing, making affected applications vulnerable to attackers. Attackers could lead a client application to believe that a secure connection to a rogue SSL server is legitimate. Attackers could also penetrate client-validated SSL server applications with a dummy certificate.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/jruby-openssl | <0.6 | 0.6 |
| JRuby | <0.6 | |
| OpenSSL | <0.6 |
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Reference Links
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/jruby-openssl/CVE-2009-4123.yml
- http://jruby.org/2009/12/07/vulnerability-in-jruby-openssl
- https://nvd.nist.gov/vuln/detail/CVE-2009-4123
- https://github.com/advisories/GHSA-xgv7-pqqh-h2w9 (Advisory)
- https://web.archive.org/web/20101213091125/http://jruby.org/2009/12/07/vulnerability-in-jruby-openssl
Frequently Asked Questions
What is the severity of CVE-2009-4123?
CVE-2009-4123 is classified as a high-severity vulnerability due to the potential for attackers to impersonate legitimate SSL servers.
How do I fix CVE-2009-4123?
To fix CVE-2009-4123, upgrade the jruby-openssl library to version 0.6 or later.
What applications are affected by CVE-2009-4123?
CVE-2009-4123 affects applications utilizing the jruby-openssl library version 0.6 and below.
What could happen if CVE-2009-4123 is exploited?
If exploited, CVE-2009-4123 allows attackers to successfully perform man-in-the-middle attacks by hijacking SSL connections.
Is CVE-2009-4123 still a risk today?
Yes, CVE-2009-4123 remains a risk if vulnerable versions of jruby-openssl are still in use in applications.
- collector/github-advisory-latest
- alias/GHSA-xgv7-pqqh-h2w9
- alias/CVE-2009-4123
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- canonical/openssl