MiniUPnPd through 2.3.11 built with --strict contains a divide-by-zero vulnerability in ProcessSSDPData() that allows unauthenticated local network attackers to crash the daemon. Attackers can send a single multicast M-SEARCH datagram with MX: 0 and a known ST to port 1900, triggering SIGFPE and denying UPnP IGD service.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Miniupnp_Project Miniupnpd
cpe:2.3:a:miniupnp_project:miniupnpd:*:*:*:*:*:*:*:*
|
— |
<= 2.3.11
|
References 5
https://github.com/miniupnp/miniupnp/commit/8f13b7a5843f5270db684099c0a083f9886…
Patch Commit
https://github.com/miniupnp/miniupnp
NVD
https://github.com/miniupnp/miniupnp/blob/miniupnpd_2_3_11/miniupnpd/minissdp.c…
NVD
https://github.com/miniupnp/miniupnp/blob/miniupnpd_2_3_11/miniupnpd/minissdp.c…
NVD
https://www.vulncheck.com/advisories/miniupnpd-through-2.3.11-divide-by-zero-do…
VulnCheck Advisory: MiniUPnPd through 2.3.11 Divide-by-Zero DoS via SSDP M-SEARCH MX Header