CVE-2015-4024: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 49.9% chance of exploitation in the next 30 days.

Algorithmic complexity vulnerability in the multipart_buffer_headers function in main/rfc1867.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 allows remote attackers to cause a denial of service (CPU consumption) via crafted form data that triggers an improper order-of-growth outcome.

Affected products

• Apple Mac OS X: up to and including 10.10.4
• HP System Management Homepage: up to and including 7.5.3.1
• Oracle Linux: version 6 only; version 7 only
• Oracle Solaris: version 11.2 only
• PHP PHP: up to and including 5.4.40; version 5.4.39 only; version 5.5.0 only; version 5.5.1 only; version 5.5.2 only; version 5.5.3 only; …
• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Hpc Node: version 7.0 only
• Red Hat Enterprise Linux Hpc Node Eus: version 7.1 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Server Eus: version 7.1 only
• Red Hat Enterprise Linux Workstation: version 7.0 only

Published 2015-06-09. Last modified 2026-06-17.