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Vulnerability Details : CVE-2014-2734

** 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.
Publish Date : 2014-04-24 Last Update Date : 2014-11-18
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 399

- Products Affected By CVE-2014-2734

# Product Type Vendor Product Version Update Edition Language
1 Application Ruby-lang Ruby 2.0 Version Details Vulnerabilities
2 Application Ruby-lang Ruby 2.0.0 Preview2 Version Details Vulnerabilities
3 Application Ruby-lang Ruby 2.0.0 Version Details Vulnerabilities
4 Application Ruby-lang Ruby 2.0.0 Preview1 Version Details Vulnerabilities
5 Application Ruby-lang Ruby 2.0.0 P0 Version Details Vulnerabilities
6 Application Ruby-lang Ruby 2.0.0 RC2 Version Details Vulnerabilities
7 Application Ruby-lang Ruby 2.0.0 P247 Version Details Vulnerabilities
8 Application Ruby-lang Ruby 2.0.0 RC1 Version Details Vulnerabilities
9 Application Ruby-lang Ruby 2.0.0 P195 Version Details Vulnerabilities
10 Application Ruby-lang Ruby 2.1 - Version Details Vulnerabilities
11 Application Ruby-lang Ruby 2.1 Preview1 Version Details Vulnerabilities
12 Application Ruby-lang Ruby 2.1.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Ruby-lang Ruby 12

- References For CVE-2014-2734
FULLDISC 20140416 Ruby OpenSSL private key spoofing ~ CVE-2014-2734 with PoC
OSVDB 106006
FULLDISC 20140502 Re: Ruby OpenSSL private key spoofing ~ CVE-2014-2734 with PoC
BID 66956

- Metasploit Modules Related To CVE-2014-2734

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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