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Flex Generated C Parsers Buffer Overflow Vulnerability
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Secunia Advisory:
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SA19071
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Release Date:
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2006-03-01
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Last Update:
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2006-03-08
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Popularity:
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6,959 views
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Critical:
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Moderately critical
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Impact:
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System access
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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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| Software: | Fast Lexical Analyzer Generator (Flex) 2.x
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| CVE reference: | CVE-2006-0459
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Description:
A vulnerability has been reported in Flex, which potentially can be exploited by malicious people to compromise a user's system.
The vulnerability is caused to a boundary error in "flex.skl". This can potentially be exploited to cause a buffer overflow in generated C parsers that use REJECT or "trailing context" rules, when processing specially crafted user-supplied input.
The vulnerability has been reported in versions prior to 2.5.33.
Solution:
Update to version 2.5.33.
http://flex.sourceforge.net/
Provided and/or discovered by:
Reported by vendor.
Changelog:
2006-03-08: Updated "Title" and "Description" sections.
Original Advisory:
http://archives.neohapsis.com/archives/apps/freshmeat/2006-02/0022.html
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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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