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Last updated: 5/27/2016 9:57:47 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-0188

Original release date: 03/22/2011
Last revised: 08/23/2011


The VpMemAlloc function in bigdecimal.c in the BigDecimal class in Ruby 1.9.2-p136 and earlier, as used on Apple Mac OS X before 10.6.7 and other platforms, does not properly allocate memory, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via vectors involving creation of a large BigDecimal value within a 64-bit process, related to an "integer truncation issue."


CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 MEDIUM
Impact Subscore: 6.4
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Per: http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html 'This issue only affects 64-bit Ruby processes'.

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External Source: REDHAT
Name: RHSA-2011:0909
External Source: SECTRACK
Name: 1025236
External Source: REDHAT
Name: RHSA-2011:0910
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=682332
Type: Patch Information
External Source: REDHAT
Name: RHSA-2011:0908
External Source: CONFIRM
Name: http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ext/bigdecimal/bigdecimal.c?r1=29364&r2=30993
Type: Advisory; Patch Information
External Source: MANDRIVA
Name: MDVSA-2011:098
External Source: CONFIRM
Name: http://support.apple.com/kb/HT4581
Type: Patch Information
External Source: APPLE
Name: APPLE-SA-2011-03-21-1
Type: Advisory; Patch Information
External Source: MANDRIVA
Name: MDVSA-2011:097

Technical Details

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