HOMEVULNERABILITIESCVE-2022-47517
HIGH

CVE-2022-47517

CWE-193Published: December 18, 2022· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.19. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that causes a url_canonize2 heap-based buffer over-read because of an off-by-one error.

NVD Source

Technical Analysis

CVE-2022-47517 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

drachtio1 product(s)
drachtio-server
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47e
PATCHhttps://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29f
PATCHhttps://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47e
PATCHhttps://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29f
ADVISORYhttps://github.com/drachtio/drachtio-server/issues/243
ADVISORYhttps://github.com/drachtio/drachtio-server/issues/243

All References (6)

→
https://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47ePatch · Third Party Advisory
→
https://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29fPatch · Third Party Advisory
→
https://github.com/drachtio/drachtio-server/issues/243Exploit · Third Party Advisory
→
https://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47ePatch · Third Party Advisory
→
https://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29fPatch · Third Party Advisory
→
https://github.com/drachtio/drachtio-server/issues/243Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2022-47517
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-193
CISA KEVNo
Affected1 vendor(s)
PublishedDec 18, 2022

Related CVEs (CWE-193)

CVE-2025-54349
10.0
CVE-2024-10442
10.0
CVE-2025-43973
9.8
CVE-2003-0466
9.8
CVE-2024-51554
9.8
CVE-2002-0083
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-47517 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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