CVE-2020-8867
22.04.2020, 21:15
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. Was ZDI-CAN-10295.
| Vendor | Product | Version |
|---|---|---|
| opcfoundation | unified_architecture_.net-standard | 𝑥 ≤ 1.04.358.30 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race ConditionThe software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.
- CWE-613 - Insufficient Session ExpirationAccording to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
References