User Enumeration via Response Timing in TYPO3

TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that observing response time during user authentication (backend and frontend) can be used to distinguish between existing and non-existing user accounts. Extension authors of 3rd party TYPO3 extensions providing a custom authentication service should check if the extension is affected by the described problem. Affected extensions must implement new `MimicServiceInterface::mimicAuthUser`, which simulates corresponding times regular processing would usually take. Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix this problem. There are no known workarounds for this issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

通过差异性导致的信息暴露

TYPO3 安全漏洞

TYPO3是瑞士TYPO3协会的一套免费开源的内容管理系统(框架)(CMS/CMF)。 TYPO3存在安全漏洞。攻击者利用该漏洞在用户身份验证（后端和前端）期间观察响应时间可区分现有和不存在的用户帐户。

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