Captcha Bypass in extension "powermail" (powermail)

It has been discovered that the extension "powermail" (powermail) is susceptible to Captcha Bypass

Release Date: April 10, 2014

Bulletin update: September 18, 2014 (added CVE)

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

Affected Versions: powermail: Version 2.0.0 - 2.0.10

Vulnerability Type: Captcha Bypass

Severity: Low

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

CVE: CVE-2014-6288

Problem Description: The extension powermail offers the use of a captch validation to secure forms. It was possible to bypass the captcha validation and submit forms.

Important Note: Other field validators weren't involved so any other validation worked as expected.

Solution: Updated version 2.0.11 is available from the TYPO3 extension manager and at Users of the extension are advised to update the extension as soon as possible as long as they use captchas in their forms.

Credits: Credits go to Jigal van Hemert 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.