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Ruby Safe Level Security Bypass Vulnerabilities

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Release Date:  2006-07-12    Last Update:  2006-07-20    Views:  16,080

Secunia Advisory SA21009

Where:

From remote

Impact:

Security Bypass

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been reported in Ruby, which can be exploited by malicious people to bypass certain security restrictions.

1) An error in the handling of the "alias" functionality can be exploited to bypass the safe level protection and replace methods called in the trusted level.

2) An error caused due to directory operations not being properly checked can be exploited to bypass the safe level protection and close untainted directory streams.

The vulnerabilities have been reported in version 1.8.4 and prior.


Solution:
The vulnerabilities have been fixed in a snapshot version and will also be fixed in the upcoming 1.8.5 version.

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
JP Vendor Status Notes (Japanese):
http://jvn.jp/jp/JVN%2383768862/index.html
http://jvn.jp/jp/JVN%2313947696/index.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Ruby Safe Level Security Bypass Vulnerabilities

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