Arbitrary file upload in Acyba AcyMailing

1) Arbitrary file upload

EUVDB-ID: #VU26386

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-2020-10934

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of files during file upload. A remote attacker can upload and execute arbitrary file on the server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

AcyMailing: 6.9

External links

http://www.acyba.com/acymailing/68-acymailing-changelog.html?Itemid=329
http://vel.joomla.org/resolved/2285-acymailing-pre6-9-2-other

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.