CVE-2021-41114

描述

TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that TYPO3 CMS is susceptible to host spoofing due to improper validation of the HTTP Host header. TYPO3 uses the HTTP Host header, for example, to generate absolute URLs during the frontend rendering process. Since the host header itself is provided by the client, it can be forged to any value, even in a name-based virtual hosts environment. This vulnerability is the same as described in TYPO3-CORE-SA-2014-001 (CVE-2014-3941). A regression, introduced during TYPO3 v11 development, led to this situation. The already existing setting $GLOBALS['TYPO3_CONF_VARS']['SYS']['trustedHostsPattern'] (used as an effective mitigation strategy in previous TYPO3 versions) was not evaluated anymore, and reintroduced the vulnerability.

如何修補 CVE-2021-41114

要修補 CVE-2021-41114,請將受影響套件升級到下列已修補版本。

• —升級至 11.5.0 或更新版本
• —升級至 11.5.0 或更新版本

CVE-2021-41114 正在被利用嗎?

低 — EPSS 為 1.2%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• >= 11.0.0, < 11.5.0
• >= 11.0.0, < 11.5.0

CVSS 分數

參考連結(8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2014-3941
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-41114
• PATCHgithub.com/TYPO3/typo3
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-41114.yaml