#VU69593 Division by zero in FreeRDP - CVE-2022-39318

Vulnerability identifier: #VU69593

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-39318

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeRDP
Universal components / Libraries / Libraries used by multiple products

Vendor: FreeRDP

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a division by zero error in urbdrc channel. A malicious server can pass specially crafted data to the application and crash it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FreeRDP: 2.0.0 rc0 - 2.8.1

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External links
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-387j-8j96-7q35
https://github.com/FreeRDP/FreeRDP/commit/80adde17ddc4b596ed1dae0922a0c54ab3d4b8ea

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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.