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PCRE Regex Parsing Multiple Vulnerabilities
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Secunia Advisory:
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SA27582
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Release Date:
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2007-11-08
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Last Update:
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2007-12-05
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Popularity:
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5,868 views
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Critical:
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Moderately critical
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Impact:
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DoS
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: | PCRE 6.x
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Binary Analysis:
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BA282 :: Available for 1 Credit 
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| CVE reference: | CVE-2005-4872
CVE-2006-7224
CVE-2006-7225
CVE-2006-7226
CVE-2006-7227
CVE-2006-7228
CVE-2006-7230
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Description:
Some vulnerabilities have been reported in PCRE, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise an application using the library.
1) Integer overflow errors when parsing regular expressions can be exploited to e.g. cause a crash or a buffer overflow via specially crafted regular expressions.
2) Errors in the processing of regular expressions and memory calculation errors can be exploited to cause memory corruption.
Solution:
The vulnerabilities are reportedly fixed in version 6.7.
Provided and/or discovered by:
1) Chris Evans
2) Reported by the vendor.
Changelog:
2007-11-12: Added CVE reference.
2007-11-15: Added CVE reference.
2007-11-20: Added CVE reference.
2007-11-26: Added CVE reference.
2007-12-05: Updated "Description". Added CVE references.
Original Advisory:
http://www.pcre.org/changelog.txt
http://scary.beasts.org/security/CESA-2007-006.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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