SB2015121401 - Remote PHP code execution in Joomla!



SB2015121401 - Remote PHP code execution in Joomla!

Published: December 14, 2015 Updated: July 18, 2016

Security Bulletin ID SB2015121401
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Remote PHP code execution (CVE-ID: CVE-2015-8562)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: 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/E:A/U:Red


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

The vulnerability exists due to insufficient filtration of HTTP User-Agent header and filter-search HTTP POST parameter before storing them into database. A remote unauthenticated attacker can permanently inject and execute arbitrary PHP code on the target system with privileges of the web server.

Successful exploitation of this vulnerability will allow a remote attacker to gain complete control over the vulnerable web application and execute arbitrary PHP code on the target system.

Note: this is a zero-day vulnerability and it is being exploited in the wild.


Remediation

Install update from vendor's website.