PT-2025-52453 · Igmpproxy+1 · Igmpproxy+1

Miora-Sora · Published 2025-12-19 · Updated 2025-12-19 · CVE-2025-50681

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions igmpproxy versions prior to commit 2b30c36

Description A crafted IGMPv3 membership report packet with a malicious source address can cause a denial of service (application crash). Insufficient validation in the recv igmp() function in src/igmpproxy.c allows an invalid group record type to trigger a NULL pointer dereference when logging the address using inet fmtsrc(). This can be exploited by sending malformed multicast traffic to a host running igmpproxy, leading to a crash. The software is used in embedded networking environments and consumer-grade IoT devices to handle multicast traffic.

Recommendations Update to a version after commit 2b30c36.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2025-50681

Affected Products

Debian

Igmpproxy

References · 11

• 🔥 https://github.com/pali/igmpproxy/issues/97 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-50681 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-50681 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-50681 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-50681 · Security Note
• https://osv.dev/vulnerability/CVE-2025-50681 · Vendor Advisory
• https://github.com/younix/igmpproxy/commit/2b30c36e6ab5b21defb76ec6458ab7687984484c · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-50681 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-50681 · Security Note
• https://twitter.com/CVEnew/status/2002099205293453710 · Twitter Post
• https://gist.github.com/miora-sora/dac1612d16c45c2aedb8605478adc28f · Note