Arbitrary File Disclosure in extension "restler" (restler)
It has been discovered that the extension "restler" (restler) is susceptible to Arbitrary File Disclosure.
Release Date: November 07, 2017
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 1.7.0 and below
Vulnerability Type: Arbitrary File Disclosure
Severity: Medium
Suggested CVSS v3.0: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C (What's that?)
CVE: not assigned yet
Problem Description: The extensions includes a vulnerable version of luracast/restler, which is known to allow users to read content of arbitrary files the webserver has access to. The vulnerability is only exploitable, if access to the vendor-directory of the extension is not forbidden (e.g. by .htaccess)
Solution: An updated version 1.7.1 is available from the TYPO3 Extension Manager and at https://extensions.typo3.org/extension/download/restler/1.7.1/zip/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Amine Bendouil who discovered and reported the vulnerability.
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.