#VU16758 Improper input validation in TYPO3

Vulnerability identifier: #VU16758

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TYPO3
Web applications / CMS

Vendor: TYPO3

Description
The vulnerability allows a remote authenticated attacker to cause DoS condition.

The vulnerability exists in Online Media Asset Handling (*.youtube and *.vimeo files) in the TYPO3 backend due to Install Tool exposes the current TYPO3 version number A remote authenticated attacker can put large files with according file extensions, trigger high consumption of system resources, exceed limits of the current PHP process which results in a dysfunctional backend component.

Mitigation
The vulnerability has been fixed in the versions 7.6.32, 8.7.21 and 9.5.2.

Vulnerable software versions

TYPO3: 7.0.0 - 7.6.31, 8.0.0 - 8.7.20, 9.0.0 - 9.5.1

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External links
https://typo3.org/security/advisory/typo3-core-sa-2018-011/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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