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Mac OS X Perl "$<" Privilege Dropping Security Issue
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Secunia Advisory:
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SA17922
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Release Date:
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2005-12-13
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Last Update:
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2006-03-02
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Popularity:
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11,620 views
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Apple Macintosh OS X
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| | CVE reference: | CVE-2005-4217
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Description:
Jason Self has reported a security issue in Mac OS X, which can be exploited by malicious people to bypass certain security restrictions.
The security issue is caused due to the Perl binary included with Mac OS X not correctly dropping privileges when a Perl application uses the "$< = numeric_id;" statement to set its uid. The issue may be caused due to wrong compilation options being selected when compiling the Perl binary.
The security issue has been reported in the Perl binary included with Mac OS X Server 10.3.9. Prior versions may also be affected.
Note: The actual impact depends on how a Perl application is written to use the affected Perl functionality.
Solution:
Apply Security Update 2006-001.
Provided and/or discovered by:
Jason Self
Changelog:
2006-03-02: Updated "Solution" section. Added CVE reference.
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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10th Oct, 2008
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