CVE-2020-27859 : Exploit Details and Defense Strategies
Learn about CVE-2020-27859, a high-severity vulnerability in NEC ESMPRO Manager 6.42 allowing remote attackers to access sensitive information without authentication. Find mitigation steps here.
This vulnerability allows remote attackers to disclose sensitive information on affected installations of NEC ESMPRO Manager 6.42. Authentication is not required to exploit this vulnerability. The specific flaw exists within the GetEuaLogDownloadAction class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-9607.
Understanding CVE-2020-27859
This CVE pertains to a vulnerability in NEC ESMPRO Manager 6.42 that allows unauthorized disclosure of sensitive information.
What is CVE-2020-27859?
CVE-2020-27859 is a security vulnerability that enables remote attackers to access confidential data on systems running NEC ESMPRO Manager 6.42 without requiring authentication.
The Impact of CVE-2020-27859
The vulnerability poses a high severity risk with a CVSS base score of 7.5, affecting confidentiality by allowing unauthorized disclosure of sensitive information.
Technical Details of CVE-2020-27859
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The flaw exists within the GetEuaLogDownloadAction class due to inadequate validation of user-supplied paths, enabling attackers to access restricted information.
Affected Systems and Versions
- Product: ESMPRO Manager
- Vendor: NEC
- Version: 6.42
Exploitation Mechanism
The vulnerability can be exploited remotely over a network without the need for user interaction, making it a critical security concern.
Mitigation and Prevention
Protecting systems from CVE-2020-27859 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply security patches provided by NEC promptly to address the vulnerability.
- Implement network segmentation to limit access to vulnerable systems.
- Monitor system logs for any suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities.
- Educate users on safe computing practices and the importance of security updates.
Patching and Updates
Regularly update and patch the NEC ESMPRO Manager software to ensure that known vulnerabilities are mitigated effectively.