CVE-2020-29069 : Exploit Details and Defense Strategies
Learn about CVE-2020-29069, a vulnerability in Modern Honey Network (MHN) allowing denial-of-service attacks via improper IP address handling. Find mitigation steps and prevention measures.
Modern Honey Network (MHN) through 2020-11-23 allows a denial-of-service attack due to improper handling of IP addresses in the geolocation database.
Understanding CVE-2020-29069
This CVE describes a vulnerability in Modern Honey Network (MHN) that can be exploited by attackers to cause a denial-of-service.
What is CVE-2020-29069?
The vulnerability in MHN allows attackers to trigger a denial-of-service by providing an IP address not present in the local geolocation database, leading to a code execution issue.
The Impact of CVE-2020-29069
The vulnerability can be exploited by malicious actors to disrupt the availability of the MHN service, potentially affecting the network's monitoring capabilities.
Technical Details of CVE-2020-29069
This section provides more in-depth technical details of the CVE.
Vulnerability Description
The vulnerability exists in the _get_flag_ip_localdb function in server/mhn/ui/utils.py in MHN, where improper handling of IP addresses not in the geolocation database can lead to a denial-of-service.
Affected Systems and Versions
- Product: Modern Honey Network (MHN)
- Vendor: N/A
- Versions: All versions through 2020-11-23
Exploitation Mechanism
Attackers can exploit this vulnerability by providing an IP address that is not present in the local geolocation database, causing the code to attempt to uppercase a return value that may not be a string.
Mitigation and Prevention
To address CVE-2020-29069, follow these mitigation strategies:
Immediate Steps to Take
- Update MHN to the latest version that includes a patch for the vulnerability.
- Implement network-level controls to filter out potentially malicious IP addresses.
Long-Term Security Practices
- Regularly monitor and update the geolocation database used by MHN.
- Conduct security assessments and audits to identify and address similar vulnerabilities.
Patching and Updates
- Apply patches and updates provided by the MHN project to fix the vulnerability and enhance the security of the system.