CVE-2014-2734
The openssl extension in Ruby 2.x does not properly maintain the state of process memory after a file is reopened, which allows remote attackers to spoof signatures within the context of a Ruby script that attempts signature verification after performing a certain sequence of filesystem operations. NOTE: this issue has been disputed by the Ruby OpenSSL team and third parties, who state that the original demonstration PoC contains errors and redundant or unnecessarily-complex code that does not appear to be related to a demonstration of the issue. As of 20140502, CVE is not aware of any public comment by the original researcher
Key facts
- CVSS score
- 5.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:N- Weakness (CWE)
- CWE-399
- EPSS score
- 5.3% (93th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2014-2762)
- Published
- April 24, 2014
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2014-2762 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
- ruby-lang / ruby
References
- http://packetstormsecurity.com/files/126218/Ruby-OpenSSL-Private-Key-Spoofing.html(Exploit)
- http://seclists.org/fulldisclosure/2014/Apr/231(Exploit)
- http://seclists.org/fulldisclosure/2014/May/13
- http://www.osvdb.org/106006
- http://www.securityfocus.com/bid/66956
- https://gist.github.com/10446549
- https://gist.github.com/emboss/91696b56cd227c8a0c13
- https://github.com/adrienthebo/cve-2014-2734/
- https://news.ycombinator.com/item?id=7601973
- https://www.ruby-lang.org/en/news/2014/05/09/dispute-of-vulnerability-cve-2014-2734/
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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