PHP contains a flaw that may allow a context-dependent attacker to gain elevated privileges. The issue is due to an integer signedness error in the printf function family as used on 64 bit machines. When a width and precision of -1 is passed to the php_sprintf_appendstring function, it may place an internal buffer at an arbitrary memory location. This may allow an attacker to execute arbitrary code.

Upgrade to version 5.2.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

• CVE ID: 2007-1884 (see also: NVD)
• Bugtraq ID: 23219
• Secunia Advisory ID: 25423 25850
• Related OSVDB ID: 33955
• Keyword: HPSBMA02215,SSRT071423 HPSBTU02232,SSRT071429 HPSBTU02232,SSRT071429,c01086137
• Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2007-06/0363.html
• Other Advisory URL: http://www.php-security.org/MOPB/MOPB-38-2007.html
• Vendor URL: http://www.php.net/
• Vendor Specific News/Changelog Entry: http://www.php.net/releases/5_2_1.php
• Vendor Specific Advisory URL: http://www8.itrc.hp.com/service/cki/docDisplay.do?docId=c01056506

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