SB2015041609 - Amazon Linux AMI update for php56
Published: April 16, 2015
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2015-0231)
The vulnerability allows a remote attacker to compromise vulnerable system. The vulnerability exists due to гse-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5. A remote attacker can trigger memory corruption via a crafted unserialize call that leverages improper handling of duplicate numerical keys within the serialized properties of an objecе. Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
2) Integer overflow (CVE-ID: CVE-2015-2305)
The vulnerability allows a local attacker to execute arbitrary code on the target system.
The vulnerability exists due to \integer overflow in the regcomp implementation in the Henry Spencer BSD regex library (aka rxspencer) alpha3.8.g5 on 32-bit platforms, as used in NetBSD through 6.1.5 and other products. A local attacker can trigger heap-based buffer overflow via a large regular expression and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Heap-based buffer overflow (CVE-ID: CVE-2015-2331)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Integer overflow in the _zip_cdir_new function in zip_dirent.c in libzip 0.11.2 and earlier, as used in the ZIP extension in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 and other products,. A remote attacker can use a ZIP archive that contains many entries to trigger heap-based buffer overflow and 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.