Magento have release a patch for the APPSEC-1746 – Remote Code Execution using mail vulnerability, while this has been known about for a while and is was easy to mitigate, they have just released a patch for it.
The work around is below:-
A new vulnerability has been found in a Zend Framework 1 and 2 email component. The component is used by all Magento 1 and Magento 2 software and other PHP solutions. This vulnerability is serious and can lead to a remote code execution attack if your server uses Sendmail as a mail transport agent.
To protect your site from this vulnerability, you should immediately check your mail sending settings. Go to the system settings used to control the “Reply to” address for emails sent from your Magento store:
- Magento 1: System-> Configuration-> Advanced-> System-> Mail Sending Settings-> Set Return-Path
- Magento 2: Stores-> Configuration-> Advanced-> System-> Mail Sending Settings-> Set Return-Path
If “Set Return-Path” is set to “Yes,” and your server uses Sendmail, then your store is vulnerable to this exploit. Enterprise Cloud Edition customers do not need to worry about this issue. We’ve already checked your configuration and you are not at risk.
While we have not yet observed attacks using this vulnerability, the risk is very high. Until patches are available, we strongly recommend that you turn off the “Set Return-Path” setting (switch to “No”), regardless of the transport agent used. Magento is currently working to provide patches to close this vulnerability and we expect they will be available in the next several weeks.
SUPEE-9652, Enterprise Edition 126.96.36.199 and Community Edition 188.8.131.52 address the Zend library vulnerability described below.
Patches and upgrades are available for the following Magento versions:
- Enterprise Edition 184.108.40.206-220.127.116.11: SUPEE-9652 or upgrade to Enterprise Edition 18.104.22.168
- Community Edition 22.214.171.124-126.96.36.199: SUPEE-9652 or upgrade to Community Edition 188.8.131.52
To download a patch or release, choose from the following options:
|Enterprise Edition 184.108.40.206||Partner Portal > Magento Enterprise Edition > Magento Enterprise Edition 1.X > Magento Enterprise Edition 1.x > Version 1.x Releases > Version 220.127.116.11|
|SUPEE-9652||Partner Portal > Magento Enterprise Edition > Magento Enterprise Edition 1.X > Magento Enterprise Edition 1.x > Support and Security Patches > Security Patches > Security Patches – February 2017|
Enterprise Edition Merchants:
|Enterprise Edition 18.104.22.168||My Account > Downloads Tab > Magento Enterprise Edition 1.X > Magento Enterprise Edition 1.x > Version
1.x Releases > Version 22.214.171.124
|SUPEE-9652||My Account > Downloads Tab > Magento Enterprise Edition 1.X > Magento Enterprise Edition 1.x > Support and Security Patches > Security Patches > Security Patches – Februrary 2017|
Community Edition Merchants:
|Community Edition 126.96.36.199||Community Edition Download Page > Release Archive Tab|
|SUPEE-9652||Community Edition Download Page > Release Archive Tab > Magento Community Edition Patches – 1.x Section|