CVE Vulnerability

CVE-2021-41114

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/TYPO3/typo3/security/advisories/GHSA-m2jh-fxw4-gphm Third Party Advisory
https://github.com/TYPO3/typo3/commit/5cbff85506cebe343e5ae59228977547cf8e3cf4 Patch Third Party Advisory
https://typo3.org/security/advisory/typo3-core-sa-2021-015 Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Information

Published : 2021-10-05 06:15

Updated : 2021-10-09 02:51

NVD link : CVE-2021-41114

Mitre link : CVE-2021-41114

Products Affected
No products.
CWE
CWE-20

CWE-644

Improper Neutralization of HTTP Headers for Scripting Syntax