Multiple vulnerabilities in TYPO3

Published: 2021-10-07

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-41113 CVE-2021-41114
CWE-ID	CWE-352 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	TYPO3 Web applications / CMS
Vendor	TYPO3

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site request forgery

EUVDB-ID: #VU57125

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41113

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin within the "Same-Site cookie settings" in "$GLOBALS[TYPO3_CONF_VARS][BE][cookieSameSite]" . A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TYPO3: 11.2.0 - 11.4.0

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU57126

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41114

CWE-ID: CWE-20 - Improper input validation