SB2018112208 - Multiple vulnerabilities in PHP
Published: November 22, 2018 Updated: November 27, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Null pointer dereference (CVE-ID: CVE-2018-19395)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference condition in the ext/standard/var.c file. A remote attacker can send a specially crafted request that submits malicious input, trigger a NULL pointer dereference condition and cause the software to crash.
2) Null pointer dereference (CVE-ID: CVE-2018-19396)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference condition that exists in the ext/standard/var_unserializer.c file when an unserialize call is made for the com, dotnet, or variant class. A remote attacker can send a specially crafted request that submits malicious input, trigger a NULL pointer dereference condition and cause the software to crash.
3) Command injection (CVE-ID: CVE-2018-19518)
The vulnerability allows a remote authenticated attacker to execute arbitrary commands on the target system.The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted data to inject and execute arbitrary commands.
Remediation
Install update from vendor's website.