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Last updated: 5/26/2016 8:28:08 AM

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Vulnerability Summary for CVE-2014-2734

Original release date: 04/24/2014
Last revised: 11/18/2014


** DISPUTED ** 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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.8 MEDIUM
Impact Subscore: 4.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification

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External Source: MISC
Name: https://news.ycombinator.com/item?id=7601973
External Source: BID
Name: 66956
External Source: FULLDISC
Name: 20140416 Ruby OpenSSL private key spoofing ~ CVE-2014-2734 with PoC
External Source: FULLDISC
Name: 20140502 Re: Ruby OpenSSL private key spoofing ~ CVE-2014-2734 with PoC
External Source: MISC
Name: https://gist.github.com/emboss/91696b56cd227c8a0c13
External Source: MISC
Name: https://gist.github.com/10446549
External Source: MISC
Name: https://www.ruby-lang.org/en/news/2014/05/09/dispute-of-vulnerability-cve-2014-2734/
External Source: MISC
Name: http://packetstormsecurity.com/files/126218/Ruby-OpenSSL-Private-Key-Spoofing.html
External Source: MISC
Name: https://github.com/adrienthebo/cve-2014-2734/

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)

Change History 2 change records found - show changes