Integer overflow in PHP - CVE-2015-4643
Published: November 27, 2018
Vulnerability identifier: #VU16121
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2015-4643
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to integer overflow in the ftp_genlist function in ext/ftp/ftp.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 . A remote attacker can trigger heap-based buffer overflow via a long reply to a LIST command and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to integer overflow in the ftp_genlist function in ext/ftp/ftp.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 . A remote attacker can trigger heap-based buffer overflow via a long reply to a LIST command and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
PHP
php5 (Ubuntu package)
SUSE Linux
php5 (Ubuntu package)
SUSE Linux
How to mitigate CVE-2015-4643
Install update from vendor's website.
PHP - addressed in versions 5.4.42, 5.5.26, 5.6.10
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.19, 5.5.9+dfsg-1ubuntu4.11, 5.5.12+dfsg-2ubuntu4.6, 5.6.4+dfsg-4ubuntu6.2
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.19, 5.5.9+dfsg-1ubuntu4.11, 5.5.12+dfsg-2ubuntu4.6, 5.6.4+dfsg-4ubuntu6.2