CVE-2017-17254 : Exploit Details and Defense Strategies

This CVE involves a null pointer dereference vulnerability in the H323 protocol affecting various Huawei products.

Understanding CVE-2017-17254

This vulnerability could allow a remote, unauthenticated attacker to crash processes by sending malformed packets to impacted products.

What is CVE-2017-17254?

The Huawei AR series, NetEngine16EX, SRG series, Secospace USG series, TE series, and more are susceptible to a null pointer dereference vulnerability in the H323 protocol.

The Impact of CVE-2017-17254

A remote attacker without authentication can exploit this vulnerability by sending malformed packets, potentially leading to process crashes due to insufficient packet validation.

Technical Details of CVE-2017-17254

Vulnerability Description

The vulnerability lies in the H323 protocol, allowing remote attackers to create malformed packets that could crash processes on affected Huawei products.

Affected Systems and Versions

Huawei AR series (multiple versions)
NetEngine16EX
SRG series
Secospace USG series
TE series

Exploitation Mechanism

Remote, unauthenticated attackers can craft and send malformed packets to exploit the insufficient packet validation, causing process crashes.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by Huawei to address the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all software and firmware on Huawei devices.
Implement network segmentation and access controls to limit exposure to potential attacks.

Patching and Updates

Huawei has released patches to mitigate the vulnerability. Ensure timely installation of these patches to secure the affected products.