Cryptographic issues in Ruby - CVE-2011-3009
Published: August 6, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44828
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-3009
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ruby
Affected software:
Ruby
Ruby
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Ruby before 1.8.6-p114 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.
How to mitigate CVE-2011-3009
Install update from vendor's website.
Sources
- http://redmine.ruby-lang.org/issues/show/4338
- http://rhn.redhat.com/errata/RHSA-2012-0070.html
- http://www.openwall.com/lists/oss-security/2011/07/20/1
- http://www.redhat.com/support/errata/RHSA-2011-1581.html
- http://www.securityfocus.com/bid/49126
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69157