Vulnerability identifier: #VU89499

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-34357

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TYPO3
Web applications / CMS

Vendor: TYPO3

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in ShowImageController. A remote user can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TYPO3: 9.5.0 - 9.5.47, 9.0.0 - 9.4.0, 10.0.0 - 10.4.44, 11.0.0 - 11.5.36, 12.4.0 - 12.4.14, 12.0.0 - 12.3.0, 12.2.0, 12.1.0 - 12.1.3, 13.1.0, 13.0.0 - 13.0.1

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External links
http://typo3.org/security/advisory/typo3-core-sa-2024-009
http://github.com/TYPO3/typo3/commit/d774642381354d3bf5095a5a26e18acd2767f0b1
http://github.com/TYPO3/typo3/commit/b31d05d1da3eeaeead2d19eb43b1c3f9c88e15ee
http://github.com/TYPO3/typo3/commit/376474904f6b9a54dc1b785a2e45277cbd13b0d7
http://github.com/TYPO3/typo3/security/advisories/GHSA-hw6c-6gwq-3m3m

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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.