The package open62541/open62541 before 1.2.5, from 1.3-rc1 and before 1.3.1 are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
| Link | Tags |
|---|---|
| https://security.snyk.io/vuln/SNYK-UNMANAGED-OPEN62541OPEN62541-2988719 | third party advisory patch |
| https://github.com/open62541/open62541/commit/b79db1ac78146fc06b0b8435773d3967de2d659c | third party advisory patch |
| https://github.com/open62541/open62541/pull/5173 | third party advisory patch |
| https://github.com/open62541/open62541/releases/tag/v1.2.5 | third party advisory release notes |
| https://github.com/open62541/open62541/releases/tag/v1.3.1 | third party advisory release notes |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNUV4FDVDBQHCPMOOEVKLMQK5SLKPK2L/ | vendor advisory |