Vulnerability identifier: #VU49286

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13452

CWE-ID: CWE-276

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gotenberg
Web applications / Other software

Vendor: thecodingmachine

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to incorrect default permissions for the "/tini" file, which is writable by default by the gotenberg user. A remote attacker can overwrite the file using vulnerability #VU49284 and perform a denial of service attack or execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gotenberg: 3.0.0 - 6.2.1

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External links
http://seclists.org/fulldisclosure/2021/Jan/0
http://medium.com/bugbountywriteup/0-day-bug-breaks-multi-million-dollar-system-38c9e31b27e9

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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.