SB2016121353 - Debian update for php5

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Deserialization of untrusted data (CVE-ID: CVE-2016-9138)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to unsafe handling of serialized data when processing property modification during __wakeup(). A remote attacker can pass specially crafted serialized data to the application and cause denial of service attack.

2) Resource exhaustion (CVE-ID: CVE-2016-9933)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the gdImageFillToBorder function in gd.c due to stack consumption. A remote attacker can submit a specially crafted imagefilltoborder call that triggers use of a negative color value and cause the service to crash.

3) NULL pointer dereference (CVE-ID: CVE-2016-9934)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in ext/wddx/wddx.c due to NULL pointer dereference. A remote attacker can submit crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string, and cause the service to crash.

Remediation

Install update from vendor's website.

References

• https://bugs.php.net/bug.php?id=73147
• http://www.php.net/ChangeLog-5.php
• http://www.php.net/ChangeLog-7.php