Home / vulnerabilities Secunia Security Advisory 42726
Posted on 29 December 2010
Source : packetstormsecurity.org Link
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TITLE:
PECL phar Extension Format String Vulnerabilities
SECUNIA ADVISORY ID:
SA42726
VERIFY ADVISORY:
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http://secunia.com/advisories/42726/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42726
RELEASE DATE:
2010-12-27
DISCUSS ADVISORY:
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http://secunia.com/advisories/42726/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42726
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DESCRIPTION:
Some vulnerabilities have been reported in the PECL phar extension,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially compromise a vulnerable system.
The "php_stream_wrapper_log_error()" function is improperly called
with controlled format string arguments while parsing PHP archives
(phar). This can be exploited to disclose or potentially corrupt
memory when e.g. an invalid filename containing format string
specifiers is requested from a phar file.
This is related to vulnerability #2 in:
SA39573
SOLUTION:
Fixed in the SVN repository.
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
PROVIDED AND/OR DISCOVERED BY:
Originally reported in PHP by Stefan Esser. Reported in the PECL phar
extension by Eygene Ryabinkin.
ORIGINAL ADVISORY:
Eygene Ryabinkin:
http://www.openwall.com/lists/oss-security/2010/12/26/1
PECL phar SVN commit:
http://svn.php.net/viewvc?view=revision&revision=306667
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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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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