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CVE-2011-2705Date: (C)2011-08-05   (M)2023-12-22


The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 5.0
Exploit Score: 10.0
Impact Score: 2.9
 
CVSS V2 Metrics:
Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE
  
Reference:
BID-49015
FEDORA-2011-9359
FEDORA-2011-9374
RHSA-2011:1581
http://www.openwall.com/lists/oss-security/2011/07/11/1
http://www.openwall.com/lists/oss-security/2011/07/12/14
http://www.openwall.com/lists/oss-security/2011/07/20/1
http://redmine.ruby-lang.org/issues/4579
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/
http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/
https://bugzilla.redhat.com/show_bug.cgi?id=722415

CPE    7
cpe:/a:ruby-lang:ruby:1.9.1
cpe:/a:ruby-lang:ruby:1.9.2
cpe:/a:ruby-lang:ruby:1.8.7:p22
cpe:/a:ruby-lang:ruby
...
CWE    1
CWE-20
OVAL    8
oval:org.secpod.oval:def:202291
oval:org.secpod.oval:def:102848
oval:org.secpod.oval:def:102763
oval:org.secpod.oval:def:1504446
...

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