---------------------------------------------------------------------- Monitor, Filter, and Manage Security Information - Filtering and Management of Secunia advisories - Overview, documentation, and detailed reports - Alerting via email and SMS Request Trial: https://ca.secunia.com/?f=l ---------------------------------------------------------------------- TITLE: PHP "readfile()" Denial of Service SECUNIA ADVISORY ID: SA14409 VERIFY ADVISORY: http://secunia.com/advisories/14409/ CRITICAL: Less critical IMPACT: DoS WHERE: >From remote SOFTWARE: PHP 4.0.x http://secunia.com/product/1655/ PHP 4.1.x http://secunia.com/product/1654/ PHP 4.2.x http://secunia.com/product/105/ PHP 4.3.x http://secunia.com/product/922/ DESCRIPTION: A vulnerability has been reported in PHP, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error in the "readfile()" function when accessing files with a size multiple times larger than the underlying architecture's page size. This can reportedly be exploited to crash the httpd process running the PHP code. This has been reported in PHP version 4. SOLUTION: Restrict access to PHP code using "readfile()" to open untrusted files. PROVIDED AND/OR DISCOVERED BY: Reported in a SUSE advisory. ORIGINAL ADVISORY: http://www.novell.com/linux/security/advisories/2005_06_sr.html ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------