medium
5.8
CWE
20
Advisory Published
Updated

CVE-2012-1172: Input Validation

First published: Thu May 24 2012(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
PHP<=5.3.10
PHP=5.0.0
PHP=5.0.0-beta1
PHP=5.0.0-beta2
PHP=5.0.0-beta3
PHP=5.0.0-beta4
PHP=5.0.0-rc1
PHP=5.0.0-rc2
PHP=5.0.0-rc3
PHP=5.0.1
PHP=5.0.2
PHP=5.0.3
PHP=5.0.4
PHP=5.0.5
PHP=5.1.0
PHP=5.1.1
PHP=5.1.2
PHP=5.1.3
PHP=5.1.4
PHP=5.1.5
PHP=5.1.6
PHP=5.2.0
PHP=5.2.1
PHP=5.2.2
PHP=5.2.3
PHP=5.2.4
PHP=5.2.5
PHP=5.2.6
PHP=5.2.7
PHP=5.2.8
PHP=5.2.9
PHP=5.2.10
PHP=5.2.11
PHP=5.2.12
PHP=5.2.13
PHP=5.2.14
PHP=5.2.15
PHP=5.2.16
PHP=5.2.17
PHP=5.3.0
PHP=5.3.1
PHP=5.3.2
PHP=5.3.3
PHP=5.3.4
PHP=5.3.5
PHP=5.3.6
PHP=5.3.7
PHP=5.3.8
PHP=5.3.9

Remedy

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

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-1172?

    CVE-2012-1172 has been classified as a medium severity vulnerability due to its potential for causing denial of service and enabling directory traversal attacks.

  • How do I fix CVE-2012-1172?

    To fix CVE-2012-1172, update your PHP version to 5.4.0 or later where the vulnerability has been addressed.

  • Which versions of PHP are affected by CVE-2012-1172?

    CVE-2012-1172 affects PHP versions prior to 5.4.0, including all versions up to 5.3.10.

  • What is the potential impact of CVE-2012-1172?

    The potential impact of CVE-2012-1172 includes malformed $_FILES indexes leading to application instability and the risk of unauthorized file access.

  • Is CVE-2012-1172 a critical vulnerability?

    CVE-2012-1172 is not classified as critical but is a vulnerability that should be addressed due to its possible effects on application security and stability.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203