CVE-2022-47516

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-12-18 · updated 2026-06-17
Weakness: CWE-617

Description

An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.20. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that leads to a failure of the libsofia-sip-ua/tport/tport.c self assertion.

Affected products

Drachtio-Server: before 0.8.20 — fixed in 0.8.20

How to fix

Upgrade to a fixed version: Drachtio-Server 0.8.20. Check the vendor advisory for mitigations.

References

https://github.com/davehorton/sofia-sip/commit/13b2a135287caa2d67ac6cd5155626821e25b377
https://github.com/drachtio/drachtio-server/issues/244
https://lists.debian.org/debian-lts-announce/2023/02/msg00028.html
https://www.debian.org/security/2023/dsa-5410
https://github.com/davehorton/sofia-sip/commit/13b2a135287caa2d67ac6cd5155626821e25b377
https://github.com/drachtio/drachtio-server/issues/244
https://lists.debian.org/debian-lts-announce/2023/02/msg00028.html
https://www.debian.org/security/2023/dsa-5410

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