Siemens LOGO!8 BM Service Port 135 missing authentication

Summaryinfo

A vulnerability has been found in Siemens LOGO!8 BM and classified as critical. The impacted element is an unknown function of the component Service Port 135. Performing a manipulation results in missing authentication. This vulnerability is reported as CVE-2020-7589. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Siemens LOGO!8 BM (the affected version unknown). This affects an unknown part of the component Service Port 135. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in LOGO!8 BM (incl. SIPLUS variants) (All versions). The vulnerability could lead to an attacker reading and modifying the device configuration and obtain project files from affected devices. The security vulnerability could be exploited by an unauthenticated attacker with network access to port 135/tcp. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

The weakness was disclosed 06/10/2020. This vulnerability is uniquely identified as CVE-2020-7589 since 01/21/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Applying a patch is able to eliminate this problem.It is possible to mitigate the weakness by firewalling tcp/135. The best possible mitigation is suggested to be patching the affected component.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Siemens

Name

• LOGO!8 BM

License

• commercial

Website

• Vendor: https://www.siemens.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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