CVE-2018-7994 : Exploit Details and Defense Strategies
Learn about CVE-2018-7994, a memory leak vulnerability in Huawei products that could lead to denial of service attacks. Find mitigation steps and patching recommendations here.
A memory leak vulnerability in certain Huawei products could allow a remote attacker to cause a denial of service by depleting device memory.
Understanding CVE-2018-7994
This CVE involves a memory leak vulnerability in Huawei products, potentially leading to device reboots due to memory depletion.
What is CVE-2018-7994?
The vulnerability arises from the failure to release allocated memory properly while processing Protal questionnaires, allowing remote attackers to exploit the issue.
The Impact of CVE-2018-7994
If exploited, this vulnerability could result in a denial of service, causing affected devices to reboot due to memory exhaustion.
Technical Details of CVE-2018-7994
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability occurs in Huawei products such as IPS Module V500R001C50, NGFW Module V500R001C50, V500R002C10, NIP6300 V500R001C50, NIP6600 V500R001C50, NIP6800 V500R001C50, Secospace USG6600 V500R001C50, and USG9500 V500R001C50.
Affected Systems and Versions
- Products: NGFW Module, NIP6300, NIP6600, NIP6800, Secospace USG6600, USG9500
- Versions: IPS Module V500R001C50, NGFW Module V500R001C50, V500R002C10, NIP6300 V500R001C50, NIP6600 V500R001C50, NIP6800 V500R001C50, Secospace USG6600 V500R001C50, USG9500 V500R001C50
Exploitation Mechanism
The vulnerability is exploited when a remote attacker sends a large number of questionnaires to the device, causing memory depletion and potential device reboots.
Mitigation and Prevention
To address CVE-2018-7994, follow these mitigation strategies:
Immediate Steps to Take
- Apply vendor-supplied patches promptly
- Monitor network traffic for any suspicious activity
- Implement firewall rules to restrict access to vulnerable systems
Long-Term Security Practices
- Regularly update and patch all software and firmware
- Conduct security assessments and audits periodically
- Train employees on cybersecurity best practices
Patching and Updates
- Check for and apply security patches provided by Huawei
- Stay informed about security advisories and updates from the vendor