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Vulnerability Details : CVE-2011-2686

Ruby before 1.8.7-p352 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900. NOTE: this issue exists because of a regression during Ruby 1.8.6 development.
Publish Date : 2011-08-05 Last Update Date : 2017-08-28
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 310

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat low
AV:L/AC:L/Au:N/C:P/I:N/A:N 2011-07-07 2011-07-02
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2686 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-2686

# Product Type Vendor Product Version Update Edition Language
1 Application Ruby-lang Ruby 1.8.7-299 Version Details Vulnerabilities
2 Application Ruby-lang Ruby 1.8.7 P71 Version Details Vulnerabilities
3 Application Ruby-lang Ruby 1.8.7-249 Version Details Vulnerabilities
4 Application Ruby-lang Ruby 1.8.7 P72 Version Details Vulnerabilities
5 Application Ruby-lang Ruby 1.8.7-248 Version Details Vulnerabilities
6 Application Ruby-lang Ruby 1.8.7 P22 Version Details Vulnerabilities
7 Application Ruby-lang Ruby 1.8.7-173 Version Details Vulnerabilities
8 Application Ruby-lang Ruby 1.8.7-334 Version Details Vulnerabilities
9 Application Ruby-lang Ruby 1.8.7-330 Version Details Vulnerabilities
10 Application Ruby-lang Ruby 1.8.7-160 Version Details Vulnerabilities
11 Application Ruby-lang Ruby 1.8.7-302 Version Details Vulnerabilities
12 Application Ruby-lang Ruby 1.8.7-p21 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Ruby-lang Ruby 12

- References For CVE-2011-2686 CONFIRM
XF ruby-random-number-dos(69032)
MLIST [oss-security] 20110720 Re: CVE Request: ruby PRNG fixes CONFIRM
BID 49015 Ruby Random Number Generation Local Denial Of Service Vulnerability Release Date:2014-02-13 CONFIRM
MLIST [oss-security] 20110711 CVE Request: ruby PRNG fixes
MLIST [oss-security] 20110712 Re: CVE Request: ruby PRNG fixes
MLIST [oss-security] 20110720 Re: CVE Request: ruby PRNG fixes CONFIRM CONFIRM

- Metasploit Modules Related To CVE-2011-2686

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

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