CVE-2021-20677 : Vulnerability Insights and Analysis
Learn about CVE-2021-20677 affecting UNIVERGE Aspire PBX by NEC Platforms, Ltd., allowing remote authenticated attackers to cause a denial of service (DoS) condition. Find mitigation strategies and patching recommendations.
This article provides detailed information about CVE-2021-20677 affecting UNIVERGE Aspire series PBX by NEC Platforms, Ltd., which allows a remote authenticated attacker to cause a denial of service (DoS) condition.
Understanding CVE-2021-20677
This section covers the essential aspects of the CVE-2021-20677 vulnerability.
What is CVE-2021-20677?
UNIVERGE Aspire series PBX (UNIVERGE Aspire WX from 1.00 to 3.51, UNIVERGE Aspire UX from 1.00 to 9.70, UNIVERGE SV9100 from 1.00 to 10.70, and SL2100 from 1.00 to 3.00) is vulnerable to a remote attack that can lead to a denial of service condition.
The Impact of CVE-2021-20677
Exploitation of this vulnerability can result in system downtime and disrupt normal operations, potentially impacting business continuity and communication.
Technical Details of CVE-2021-20677
In this section, we delve into the technical specifics of the CVE-2021-20677 vulnerability.
Vulnerability Description
The vulnerability in UNIVERGE Aspire series PBX allows a remote authenticated attacker to trigger a denial of service condition by sending a specially crafted command.
Affected Systems and Versions
The affected products include UNIVERGE Aspire WX, UNIVERGE Aspire UX, UNIVERGE SV9100, and SL2100 within specified version ranges.
Exploitation Mechanism
An attacker with remote authenticated access can exploit this vulnerability by sending malicious commands, leading to a DoS condition.
Mitigation and Prevention
This section provides insights on how to mitigate the risks posed by CVE-2021-20677.
Immediate Steps to Take
It is crucial to apply security patches provided by NEC Platforms, Ltd. promptly to address this vulnerability.
Long-Term Security Practices
Implement strict access controls, network segmentation, and security monitoring to prevent unauthorized access and detect anomalous behavior.
Patching and Updates
Regularly update and patch the affected systems with the latest security fixes to protect against potential exploits.