igmpproxy 0.4 before commit 2b30c36 allows remote attackers to cause a denial of service (application crash) via a crafted IGMPv3 membership report packet with a malicious source address. Due to insufficient validation in the `recv_igmp()` function in src/igmpproxy.c, an invalid group record type can trigger a NULL pointer dereference when logging the address using `inet_fmtsrc()`. This vulnerability can be exploited by sending malformed multicast traffic to a host running igmpproxy, leading to a crash. igmpproxy is used in various embedded networking environments and consumer-grade IoT devices (such as home routers and media gateways) to handle multicast traffic for IPTV and other streaming services. Affected devices that rely on unpatched versions of igmpproxy may be vulnerable to remote denial-of-service attacks across a LAN .
Metrics
Affected Vendors & Products
References
History
Fri, 19 Dec 2025 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-120 | |
| Metrics |
cvssV3_1
|
Fri, 19 Dec 2025 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | igmpproxy 0.4 before commit 2b30c36 allows remote attackers to cause a denial of service (application crash) via a crafted IGMPv3 membership report packet with a malicious source address. Due to insufficient validation in the `recv_igmp()` function in src/igmpproxy.c, an invalid group record type can trigger a NULL pointer dereference when logging the address using `inet_fmtsrc()`. This vulnerability can be exploited by sending malformed multicast traffic to a host running igmpproxy, leading to a crash. igmpproxy is used in various embedded networking environments and consumer-grade IoT devices (such as home routers and media gateways) to handle multicast traffic for IPTV and other streaming services. Affected devices that rely on unpatched versions of igmpproxy may be vulnerable to remote denial-of-service attacks across a LAN . | |
| References |
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-12-19T15:17:33.578Z
Reserved: 2025-06-16T00:00:00.000Z
Link: CVE-2025-50681
Updated: 2025-12-19T15:16:33.943Z
Status : Awaiting Analysis
Published: 2025-12-19T15:15:55.953
Modified: 2025-12-19T18:00:18.330
Link: CVE-2025-50681
No data.
OpenCVE Enrichment
No data.