CVE-2012-1172

MEDIUM

Description

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

http://isisblogs.poly.edu/2011/08/11/php-not-properly-checking-params/

http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html

http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080037.html

http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080041.html

http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080070.html

http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00011.html

http://marc.info/?l=bugtraq&m=134012830914727&w=2

http://openwall.com/lists/oss-security/2012/03/13/4

http://support.apple.com/kb/HT5501

http://svn.php.net/viewvc/php/php-src/branches/PHP_5_4/main/rfc1867.c?r1=321664&r2=321663&pathrev=321664

http://svn.php.net/viewvc?view=revision&revision=321664

http://www.debian.org/security/2012/dsa-2465

http://www.php.net/ChangeLog-5.php#5.4.0

https://bugs.php.net/bug.php?id=48597

https://bugs.php.net/bug.php?id=49683

https://bugs.php.net/bug.php?id=54374

https://bugs.php.net/bug.php?id=55500

https://nealpoole.com/blog/2011/10/directory-traversal-via-php-multi-file-uploads/

https://students.mimuw.edu.pl/~ai292615/php_multipleupload_overwrite.pdf

Details

Source: MITRE

Published: 2012-05-24

Updated: 2018-01-18

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5.8

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:P

Impact Score: 4.9

Exploitability Score: 8.6

Severity: MEDIUM