SB2015121201 - Ubuntu update for PHP

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Main Vulnerability Database SB2015121201

SB2015121201 - Ubuntu update for PHP

Published: December 12, 2015 Updated: November 27, 2018

Security Bulletin ID SB2015121201
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2013-6420)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when the asn1_time_to_time_t function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse (1) notBefore and (2) notAfter timestamps in X.509 certificates. A remote attacker can supply specially crafted X.509 certificates, trigger memory corruption and cause the service to crash or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Buffer over-read (CVE-ID: CVE-2013-6712)

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to the scan function in ext/date/lib/parse_iso_intervals.c in PHP through 5.5.6 does not properly restrict creation of DateInterval objects. A remote attacker can trigger heap-based buffer over-read and cause the service to crash via a crafted interval specification.


Remediation

Install update from vendor's website.

References