Heap-based buffer overflow in PHP - CVE-2014-3670
Published: November 27, 2018
Vulnerability identifier: #VU16099
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2014-3670
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PHP
PHP
Software vendor:
PHP Group
PHP Group
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow when exif_ifd_make_value function in exif.c in the EXIF extension in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 operates on floating-point arrays incorrectly. A remote attacker can trigger memory corruption via a crafted JPEG image with TIFF thumbnail data that is improperly handled by the exif_thumbnail function and cause the application to crash or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.