CVE-2019-10927 : Vulnerability Insights and Analysis
Discover the security flaw in Siemens SCALANCE devices (SC-600, XB-200, XC-200, XF-200BA, XP-200, XR-300WG) with CVE-2019-10927. Learn about the impact, affected systems, exploitation, and mitigation steps.
A security flaw has been discovered in various SCALANCE devices, including SCALANCE SC-600 (V2.0), SCALANCE XB-200 (V4.1), SCALANCE XC-200 (V4.1), SCALANCE XF-200BA (V4.1), SCALANCE XP-200 (V4.1), and SCALANCE XR-300WG (V4.1). This vulnerability could lead to a Denial-of-Service situation when an authenticated attacker gains network access to a vulnerable device without requiring user interaction.
Understanding CVE-2019-10927
This CVE identifies a security vulnerability in Siemens SCALANCE devices that could impact the availability of the affected devices.
What is CVE-2019-10927?
The vulnerability allows an authenticated attacker with network access to port 22/tcp of the affected device to potentially cause a Denial-of-Service situation without any user interaction.
The Impact of CVE-2019-10927
The main impact of this vulnerability is on the availability of the affected SCALANCE devices, potentially disrupting their normal operation.
Technical Details of CVE-2019-10927
Siemens SCALANCE devices are affected by this vulnerability, leading to potential Denial-of-Service scenarios.
Vulnerability Description
The vulnerability arises from improper handling of exceptional conditions (CWE-703) in the affected SCALANCE devices.
Affected Systems and Versions
- SCALANCE SC-600 (V2.0)
- SCALANCE XB-200 (V4.1)
- SCALANCE XC-200 (V4.1)
- SCALANCE XF-200BA (V4.1)
- SCALANCE XP-200 (V4.1)
- SCALANCE XR-300WG (V4.1)
Exploitation Mechanism
- An authenticated attacker with network access to port 22/tcp of the vulnerable device can exploit the vulnerability.
- No user interaction is needed to trigger the Denial-of-Service condition.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-10927.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to address the vulnerability.
- Restrict network access to vulnerable devices to authorized personnel only.
Long-Term Security Practices
- Regularly monitor and update security configurations on SCALANCE devices.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security advisories from Siemens and apply patches promptly to secure SCALANCE devices.