Vulnerability identifier: #VU73166

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-47516

CWE-ID: CWE-617

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drachtio Server
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: drachtio

Description

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

The vulnerability exists due to a reachable assertion within libsofia-sip-ua/tport/tport.c. A remote attacker can send a specially crafted UDP request to the server and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Drachtio Server: 0.2.0 - 0.8.19 rc14

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External links
http://github.com/davehorton/sofia-sip/commit/13b2a135287caa2d67ac6cd5155626821e25b377
http://github.com/drachtio/drachtio-server/issues/244
http://lists.debian.org/debian-lts-announce/2023/02/msg00028.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.