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TITLE:
Ruby BigDecimal Integer Truncation Vulnerability

SECUNIA ADVISORY ID:
SA44638

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44638/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44638

RELEASE DATE:
2011-05-25

DISCUSS ADVISORY:
http://secunia.com/advisories/44638/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/44638/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=44638

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DESCRIPTION:
A vulnerability has been reported in Ruby, which can be exploited by
malicious people to cause a DoS (Denial of Service) and potentially
compromise a vulnerable system.

The vulnerability is caused due to an integer truncation
vulnerability within the "VpMemAlloc()" function in
ext/bigdecimal/bigdecimal.c, which can be exploited to e.g. cause a
memory corruption.

Note: This only affects 64bit systems.

The vulnerability is reported in versions 1.8.7 p334 and 1.9.2 p180.
Other versions may also be affected.

SOLUTION:
Fixed in the SVN repository.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Drew Yao, Apple Product Security

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/show_bug.cgi?id=682332
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=30993

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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