PatchTheCVECVE-2022-47516: An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.20
CVE-2022-47516 is a high-severity flaw (CVSS 7.5) affecting drachtio-server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.8% (top 22%) |
| CISA exploited list | No |
| Weakness | CWE-617 |
| Published | 2022-12-18 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2022-47516?
drachtio-server: upgrade to 0.8.20. Exact commands for each OS are on this page.
Is CVE-2022-47516 being exploited?
CVE-2022-47516 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2022-47516 affect?
CVE-2022-47516 affects drachtio-server. Severity is high (CVSS 7.5). 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
How urgent is CVE-2022-47516?
Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2022-47517 HIGH 7.5 UPGRADE An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.19
- CVE-2022-47515 HIGH 7.5 UPGRADE An issue was discovered in drachtio-server before 0.8.20
- CVE-2022-45909 CRITICAL 9.1 UPGRADE drachtio-server before 0.8.19 has a heap-based buffer over-read via a long Request-URI in an INVITE request.
- CVE-2022-45474 CRITICAL 9.8 DOWNGRADE drachtio-server 0.8.18 has a request-handler.cpp event_cb use-after-free for any request.
- CVE-2022-45473 MEDIUM 5.5 DOWNGRADE In drachtio-server 0.8.18, /var/log/drachtio has mode 0777 and drachtio.log has mode 0666.