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Vulnerability of TYPO3 Front End User Registration: privilege escalation via Captcha Bypass

Synthesis of the vulnerability

An attacker can bypass restrictions via Captcha Bypass of TYPO3 Front End User Registration, in order to escalate his privileges.
Severity of this computer vulnerability: 2/4.
Creation date: 09/08/2018.
Références of this announce: TYPO3-EXT-SA-2018-006, VIGILANCE-VUL-26944.

Description of the vulnerability

An attacker can bypass restrictions via Captcha Bypass of TYPO3 Front End User Registration, in order to escalate his privileges.
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This weakness impacts software or systems such as TYPO3 Extensions ~ not comprehensive.

Our Vigil@nce team determined that the severity of this vulnerability announce is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this threat bulletin.

Solutions for this threat

TYPO3 Front End User Registration: version 5.1.0.
The version 5.1.0 is fixed:
  https://extensions.typo3.org/extension/download/sr_feuser_register/5.1.0/zip/
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