#VU23643 Path traversal in TYPO3

Vulnerability identifier: #VU23643

Vulnerability risk: Medium

CVSSv4.0: 4.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TYPO3
Web applications / CMS

Vendor: TYPO3

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within Extension Manager during extraction of manual uploaded ZIP archives. A remote attacker can trick an administrator into uploading a specially crafted zip file that contains directory traversal characters in its name and overwrite arbitrary files on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TYPO3: 8.0.0 - 8.7.29, 9.0.0 - 9.5.11, 10.0.0 - 10.2.0

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External links
https://typo3.org/security/advisory/typo3-core-sa-2019-024/

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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.