National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2014-2734 Detail

Current Description

** 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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.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/

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:p195:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:p247:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:preview1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:preview2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.0.0:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.1:-:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.1:preview1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ruby-lang:ruby:2.1.1:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2014-2734
NVD Published Date:
04/24/2014
NVD Last Modified:
11/18/2014