#VU70538 Heap-based buffer overflow in Netatalk - CVE-2022-45188

Vulnerability identifier: #VU70538

Vulnerability risk: High

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

CVE-ID: CVE-2022-45188

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Netatalk
Server applications / File servers (FTP/HTTP)

Vendor: Netatalk

Description

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

The vulnerability exists due to a boundary error in afp_getappl when handling .appl files. A remote attacker can create a specially crafted .appl file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Netatalk: 1.5.0 - 3.1.13

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External links
https://rushbnt.github.io/bug%20analysis/netatalk-0day/
https://sourceforge.net/projects/netatalk/files/netatalk/
https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html
https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.14.html

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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.