CVE-2021-41113 Details

CVE-2021-41113

Published: 2021-10-05
Last Modified: 2021-10-09
CVE Author: NIST National Vulnerability Database
CVE Assigner: security-advisories@github.com
Summary

TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that the new TYPO3 v11 feature that allows users to create and share deep links in the backend user interface is vulnerable to cross-site-request-forgery. The impact is the same as described in TYPO3-CORE-SA-2020-006 (CVE-2020-11069). However, it is not limited to the same site context and does not require the attacker to be authenticated. In a worst case scenario, the attacker could create a new admin user account to compromise the system. To successfully carry out an attack, an attacker must trick his victim to access a compromised system. The victim must have an active session in the TYPO3 backend at that time. The following Same-Site cookie settings in $GLOBALS[TYPO3_CONF_VARS][BE][cookieSameSite] are required for an attack to be successful: SameSite=strict: malicious evil.example.org invoking TYPO3 application at good.example.org and SameSite=lax or none: malicious evil.com invoking TYPO3 application at example.org. Update your instance to TYPO3 version 11.5.0 which addresses the problem described.

Analysis
Common Vulnerability Score System v2.0
Severity Medium
Base Score 6.8/10
Exploit Score 8.6/10
Access Vector Network
Access Complexity Medium
Authentication None
Impact Score 6.4/10
Confidentiality Impact Partial
Availability Impact Partial
Integrity Impact Partial
Vector String AV:N/AC:M/Au:N/C:P/I:P/A:P
Common Vulnerability Score System v3.1
Severity High
Base Score 8.8/10
Exploit Score 2.8/10
Access Vector Network
Access Complexity Low
Privileges Required None
Impact Score 5.9/10
Confidentiality Impact High
Availability Impact High
Integrity Impact High
Scope Unchanged
User Interaction Required
Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Yes 11.2.0 11.5.0
References

https://github.com/TYPO3/typo3/commit/fa51999203c5e5d913ecae5ea843ccb2b95fa33f
https://github.com/TYPO3/typo3/security/advisories/GHSA-657m-v5vm-f6rw
https://typo3.org/security/advisory/typo3-core-sa-2020-006

CVE ID
CVE-2021-41113
Published
2021-10-05
Modified
2021-10-09
CVSSv2.0
Medium
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-352

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