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Ruby Random Number Generation Local Denial Of Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

11 years ago

Modified

Modified

3 years ago

Summary

This host is installed with Ruby and is prone to local denial of service vulnerability.

Insight

Insight

The flaw exists because ruby 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.

Affected Software

Affected Software

Ruby Versions prior to 1.8.7-p352

Solution

Solution

Upgrade to Ruby version 1.8.7-p352 or later

Common Vulnerabilities and Exposures (CVE)