#VU87553 Protection Mechanism Failure in AMaViS - CVE-2024-28054

Vulnerability identifier: #VU87553

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Amber]

CVE-ID: CVE-2024-28054

CWE-ID: CWE-693

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AMaViS
Server applications / Server solutions for antivurus protection

Vendor: Amavis.org

Description

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

The vulnerability exists due to the way Amavis handles emails consisting of multiple parts (`Content-Type: multipart/*`). A remote attacker can create a specially crafted email message that can bypass antivirus scan and deliver potentially dangerous attachments to the end users.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AMaViS: 0.1.1 - 20040701

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External links
https://gitlab.com/amavis/amavis/-/commit/3290c9c2a11a8cc9595b5810b2f86c1dac25a392#4550d389b7e0a48a75cb34e3bf1df26473e6fe77

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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.