CVE-2021-21749 : Exploit Details and Defense Strategies
Discover the stack-based buffer overflow vulnerabilities in ZTE MF971R allowing attackers to execute arbitrary code. Learn about the impact, technical details, and mitigation steps.
ZTE MF971R product has two stack-based buffer overflow vulnerabilities that can be exploited by attackers to execute arbitrary code.
Understanding CVE-2021-21749
This CVE identifies two stack-based buffer overflow vulnerabilities in the ZTE MF971R product.
What is CVE-2021-21749?
CVE-2021-21749 refers to the discovery of two stack-based buffer overflow vulnerabilities in the ZTE MF971R product, which allows attackers to execute arbitrary code.
The Impact of CVE-2021-21749
The impact of CVE-2021-21749 is severe as it enables attackers to potentially run malicious code on affected devices, compromising data integrity and confidentiality.
Technical Details of CVE-2021-21749
The technical details of CVE-2021-21749 highlight the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability involves stack-based buffer overflow issues in the ZTE MF971R product, enabling attackers to trigger arbitrary code execution.
Affected Systems and Versions
The affected systems include versions BD_ZTE_MF971RV1.0.0B05, BD_PLKPLMF971R1V1.0.0B06, BD_MF971R2V1.0.0B03, BD_ZTE_MF971RS2V1.0.0B03, and BD_ZTE_MF971RSV1.0.0B05 of the ZTE MF971R product.
Exploitation Mechanism
Attackers can exploit these vulnerabilities by crafting malicious payloads to overrun the stack buffer, leading to arbitrary code execution.
Mitigation and Prevention
Understanding the immediate steps to take and long-term security practices is crucial to mitigating the risks posed by CVE-2021-21749.
Immediate Steps to Take
Immediate actions involve updating the affected ZTE MF971R devices, restricting network access, and monitoring for any suspicious activities.
Long-Term Security Practices
Implementing network segmentation, applying the principle of least privilege, conducting regular security audits, and educating users on cybersecurity best practices are crucial long-term security measures.
Patching and Updates
Regularly applying security patches and firmware updates provided by ZTE is essential to address and prevent stack-based buffer overflow vulnerabilities.