PRIOn knowledge basePRION:CVE-2012-1172Directory traversal
The file-upload implementation in rfc1867.c in PHP before 5.4.0 does not properly handle invalid [ (open square bracket) characters in name values, which makes it easier for remote attackers to cause a denial of service (malformed $_FILES indexes) or conduct directory traversal attacks during multi-file uploads by leveraging a script that lacks its own filename restrictions.
References
isisblogs.poly.edu/2011/08/11/php-not-properly-checking-params/
lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
lists.opensuse.org/opensuse-security-announce/2012-05/msg00007.html
lists.opensuse.org/opensuse-security-announce/2012-05/msg00011.html
openwall.com/lists/oss-security/2012/03/13/4
support.apple.com/kb/HT5501
svn.php.net/viewvc/php/php-src/branches/PHP_5_4/main/rfc1867.c?r1=321664&r2=321663&pathrev=321664
svn.php.net/viewvc?view=revision&revision=321664
www.debian.org/security/2012/dsa-2465
www.php.net/ChangeLog-5.php
bugs.php.net/bug.php?id=48597
bugs.php.net/bug.php?id=49683
bugs.php.net/bug.php?id=54374
bugs.php.net/bug.php?id=55500
lists.fedoraproject.org/pipermail/package-announce/2012-May/080037.html
lists.fedoraproject.org/pipermail/package-announce/2012-May/080041.html
lists.fedoraproject.org/pipermail/package-announce/2012-May/080070.html
marc.info/?l=bugtraq&m=134012830914727&w=2
nealpoole.com/blog/2011/10/directory-traversal-via-php-multi-file-uploads/
students.mimuw.edu.pl/~ai292615/php_multipleupload_overwrite.pdf
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