Integer overflow in PHP - CVE-2017-5340
Published: May 21, 2018
Vulnerability identifier: #VU12910
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-2017-5340
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The weakness exists in zend/zend_hash.c due to mishandling certain cases that require large array allocations. A remote attacker can submit specially crafted serialized data and cause the service to crash or execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists in zend/zend_hash.c due to mishandling certain cases that require large array allocations. A remote attacker can submit specially crafted serialized data and cause the service to crash or execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
PHP
Arch Linux
Amazon Linux AMI
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
Arch Linux
Amazon Linux AMI
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
How to mitigate CVE-2017-5340
Update to version 7.0.15 or 7.1.1.