CVE-2019-5273 : Security Advisory and Response
Learn about CVE-2019-5273, a denial of service vulnerability in Huawei USG9500 devices running V500R001C30 and V500R001C60 versions. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A security vulnerability has been identified in Huawei USG9500 devices running versions V500R001C30 and V500R001C60, potentially leading to a denial of service attack.
Understanding CVE-2019-5273
This CVE pertains to a flaw in the X.509 implementation in the affected versions of Huawei USG9500 devices, allowing attackers to exploit the vulnerability with a malicious certificate, resulting in a denial of service.
What is CVE-2019-5273?
The vulnerability in CVE-2019-5273 is a denial of service issue caused by a flaw in the X.509 implementation in Huawei USG9500 devices running V500R001C30 and V500R001C60 versions.
The Impact of CVE-2019-5273
Exploiting this vulnerability could lead to a denial of service attack on the affected devices, causing a disruption in service availability.
Technical Details of CVE-2019-5273
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Huawei USG9500 devices with versions V500R001C30 and V500R001C60 allows for a denial of service due to a flaw in the X.509 implementation, which can be exploited by a malicious certificate.
Affected Systems and Versions
- Product: USG9500
- Vendor: Huawei
- Affected Versions: V500R001C30, V500R001C60
Exploitation Mechanism
The flaw in the X.509 implementation in the affected versions enables attackers to trigger a denial of service by utilizing a malicious certificate.
Mitigation and Prevention
To address CVE-2019-5273, follow these mitigation strategies:
Immediate Steps to Take
- Apply patches provided by Huawei promptly.
- Monitor network traffic for any suspicious activities.
- Implement strong access controls and authentication mechanisms.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing regularly.
- Educate users and administrators about security best practices.
Patching and Updates
- Huawei may release patches to address the vulnerability; ensure timely installation to mitigate the risk.