A flaw was found in open62541. When the Local Discovery Server (LDS) is configured with multicast discovery via the MDNSD backend, an unauthenticated remote attacker can exploit a buffer overflow vulnerability. By sending numerous unique discovery URLs in RegisterServer or RegisterServer2 requests, the attacker can cause the server to crash, leading to a denial of service.

Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service.

Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local ...

Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service.