CVE-2021-27446 Explained : Impact and Mitigation
Learn about CVE-2021-27446, a critical code injection vulnerability in Weintek's cMT product line, allowing remote attackers to execute commands with root privileges. Find out the impact, affected systems, and mitigation steps.
This article provides details about CVE-2021-27446, a code injection vulnerability affecting Weintek's cMT product line, allowing remote attackers to execute commands with root privileges.
Understanding CVE-2021-27446
CVE-2021-27446 is a critical code injection vulnerability impacting multiple Weintek cMT devices. It was reported to CISA by Marcin Dudek from CERT.PL.
What is CVE-2021-27446?
The vulnerability in the Weintek cMT product line enables unauthenticated remote attackers to perform code injection and execute commands with root privileges on the operating system.
The Impact of CVE-2021-27446
With a CVSS base score of 10, this critical vulnerability poses a significant risk, allowing attackers to compromise confidentiality, integrity, and availability without requiring any user interaction.
Technical Details of CVE-2021-27446
The code injection vulnerability has a CVSSv3.1 base score of 10, indicating high impact with low attack complexity through a network vector.
Vulnerability Description
Weintek's cMT devices are susceptible to code injection, enabling attackers to execute malicious commands with root privileges remotely.
Affected Systems and Versions
The vulnerability affects various Weintek cMT products, including cMT-SVR-1xx/2xx, cMT-G01/G02, cMT-G03/G04, cMT3071, cMT3072, cMT3090, cMT3103, cMT3151, cMT-HDM, cMT-FHD, and cMT-CTRL01.
Exploitation Mechanism
Remote attackers can exploit this vulnerability over the network without requiring any privileges to execute arbitrary commands.
Mitigation and Prevention
To address CVE-2021-27446, Weintek has released OS upgrades for the affected products. Users are advised to refer to Weintek's Technical Notice for detailed information on patching and securing the devices.
Immediate Steps to Take
It is crucial for users to apply the provided security updates immediately to mitigate the risk of exploitation.
Long-Term Security Practices
Implementing network segmentation, restricting access to vulnerable devices, and regular security monitoring can enhance long-term security.
Patching and Updates
Regularly check for security updates and patches from Weintek to ensure the devices are protected from known vulnerabilities.