CVE-2025-50681

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Source
https://cve.org/CVERecord?id=CVE-2025-50681
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-50681.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-50681
Downstream
Published
2025-12-19T15:15:55.953Z
Modified
2026-03-14T12:45:00.203124Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

Affected packages

Git / github.com/pali/igmpproxy

Affected ranges

Type
GIT
Repo
https://github.com/pali/igmpproxy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
9762cf8b756a0ddf21f18298f0fb1c52c5fbbfca
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.4"
        }
    ]
}
Type
GIT
Repo
https://github.com/younix/igmpproxy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2b30c36e6ab5b21defb76ec6458ab7687984484c

Affected versions

0.*
0.1-beta2
0.1_beta3
0.1_beta4
0.1_beta5
0.2
0.2.1
0.3
0.4
v0.*
v0.1

Database specific

vanir_signatures 
[
    {
        "digest": {
            "length": 518.0,
            "function_hash": "125283243172514325869585877938982509972"
        },
        "signature_version": "v1",
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2025-50681-d8be066d",
        "target": {
            "function": "igmpPacketKind",
            "file": "src/igmp.c"
        },
        "source": "https://github.com/younix/igmpproxy/commit/2b30c36e6ab5b21defb76ec6458ab7687984484c"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "50756659220313699263941561237967214109",
                "137406112687305645020945776008216062222",
                "241535495667436516775284101324537388911",
                "269139974807778238392254168350042994888"
            ]
        },
        "signature_version": "v1",
        "deprecated": false,
        "signature_type": "Line",
        "id": "CVE-2025-50681-ef7498cb",
        "target": {
            "file": "src/igmp.c"
        },
        "source": "https://github.com/younix/igmpproxy/commit/2b30c36e6ab5b21defb76ec6458ab7687984484c"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-50681.json"