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AUSCERT Security Bulletin
ASB-2009.1136.2
PHP 5.3.1 Released
24 November 2009
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AusCERT Security Bulletin Summary
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Product: PHP 5.3.1
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2009-4017 CVE-2009-3559 CVE-2009-3558
CVE-2009-3557
Member content until: Sunday, December 20 2009
Revision History: November 24 2009: Added CVE References
November 20 2009: Initial Release
OVERVIEW
PHP 5.3.1 has been released, including several security fixes.
IMPACT
According to the vendor[1], the following security fixes are available
in this version of PHP:
* Added "max_file_uploads" INI directive, which can be set to
limit the number of file uploads per-request to 20 by default,
to prevent possible DOS via temporary file exhaustion.
* Added missing sanity checks around exif processing.
* Fixed a safe_mode bypass in tempnam().
* Fixed a open_basedir bypass in posix_mkfifo().
* Fixed bug #50063 (safe_mode_include_dir fails).
Many other non-security related fixes are also included in this
version.
MITIGATION
Users of PHP 5.3.0 should upgrade to 5.3.1. Users of PHP 5.2 may need
to evaluate changes between the two versions before upgrading.
REFERENCES
[1] PHP 5.3.1 Release Announcement
http://www.php.net/releases/5_3_1.php
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
http://www.auscert.org.au/render.html?it=3192
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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