CVE-2018-7559 OPC UA applications can allow a remote attacker to determine a Server's private key
Remote attackers can determine a server's private key via an oracle attack using crafted UserIdentityTokens in OPC UA .NET applications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-7559?
CVE-2018-7559 is a medium-severity vulnerability in n/a, published on 13 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.
Weakness: CWE-320
Which versions are affected by CVE-2018-7559?
2 open source packages ship an affected version, including OPCFoundation.NetStandard.Opc.Ua. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
OPCFoundation.NetStandard.Opc.Ua NuGet | All versions | 1.3.352.12 |
OPCFoundation.NetStandard.Opc.Ua NuGet | All versions | 1.3.352.12 |
Products include Opcfoundation Ua-.Net-Legacy, Opcfoundation Ua-.Netstandard.
How do I fix CVE-2018-7559?
Upgrade OPCFoundation.NetStandard.Opc.Ua to 1.3.352.12 or later.
Is CVE-2018-7559 being exploited?
There is no known exploitation of CVE-2018-7559 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gr4c-5rq6-cgh3.