Vulnerability identifier: #VU84403

Vulnerability risk: Low

CVSSv3.1: 2.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49089

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Umbraco CMS
Web applications / CMS

Vendor: Umbraco

Description

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the backoffice component. A remote user with permissions to create packages can send a specially crafted HTTP request and write arbitrary files outside of the expected location.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Umbraco CMS: 10.0.0 - 10.8.0, 12.0.0 - 12.3.3, 11.0.0 - 11.5.0, 8.0.0 - 8.18.9, 9.0.0 - 9.5.4

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External links
http://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6324-52pr-h4p5

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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