#VU83290 Input validation error in pretix - CVE-2023-44464

Vulnerability identifier: #VU83290

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-44464

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pretix
Web applications / Other software

Vendor: pretix

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of images passed to the application. A remote user can create a specially crafted ".eps" file, rename it into a file with ".png" extension and upload the file to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

pretix: 1.0.0 - 2023.9.0

---

External links
https://github.com/pretix/pretix/tags
https://github.com/pretix/pretix/compare/v2023.7.1...v2023.7.2
https://pretix.eu/about/en/ticketing
https://github.com/pretix/pretix/commit/8583bfb7d97263e9e923ad5d7f123ca1cadc8f2e
https://pretix.eu/about/de/blog/20230912-release-2023-7-2/

---

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.