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TYPO3-EXT-SA-2014-007: Arbitrary code execution in extension "powermail" (powermail)

It has been discovered that the extension "powermail" (powermail) is susceptible to arbitrary code execution and Cross-Site Scripting

Release Date: May 22, 2014

Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.

Affected Versions: powermail: Versions 2.0.13 and below, 1.6.10 and below

Vulnerability Type: Arbitrary Code Execution

Severity: Critical

Suggested CVSS v2.0: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:O/RC:C (What's that?)

CVE: CVE-2014-3947

Problem Description: The extension powermail offers the possibility to upload files. It was discovered that it was possible to upload files with specially crafted file extensions, which could be executed as PHP files on the server when using Apache as web server with mod_mime available (default). Uploading files in powermail is possible without finally submitting the form, so a malicious file could be uploaded without further discovery. Failing to check the uploaded file name against the fileDenyPattern pattern, powermail is susceptible to arbitrary code execution.

Please also read an older bulletin and a blog article for further information about this issue in combination with Apache as web server.

Solution: Updated versions 2.0.14 and 1.6.11 are available from the TYPO3 extension manager and at http://typo3.org/extensions/repository/download/powermail/2.0.14/t3x/ and http://typo3.org/extensions/repository/download/powermail/1.6.11/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Wouter van Dongen who discovered and reported the issue. 

Affected Versions: powermail: Versions 1.6.10 and below

Vulnerability Type: Cross-Site Scripting

Severity: Low

Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:N/E:F/RL:O/RC:C (What's that?)

CVE: CVE-2014-3948

Problem Description: It was discovered that versions 1.6.10 and below are susceptible to Cross-Site SCripting within the HTML export wizard in the backend module.

Solution: An updated version 1.6.11 is available from the TYPO3 extension manager and at http://typo3.org/extensions/repository/download/powermail/1.6.11/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Florian Grunow who discovered and reported this issue.

General advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.