CVE-2017-15343 : Security Advisory and Response

Huawei AR3200 with software versions V200R006C10, V200R006C11, V200R007C00, V200R007C01, V200R007C02, V200R008C00, V200R008C10, V200R008C20, and V200R008C30 is affected by an integer overflow vulnerability due to inadequate validation of certain fields in SCTP messages. A remote attacker could exploit this vulnerability to cause a system reboot.

Understanding CVE-2017-15343

This CVE entry describes a specific vulnerability in Huawei AR3200 routers.

What is CVE-2017-15343?

CVE-2017-15343 is an integer overflow vulnerability in Huawei AR3200 routers that allows remote unauthenticated attackers to trigger a system reboot by sending manipulated SCTP messages.

The Impact of CVE-2017-15343

The vulnerability could lead to a denial of service (DoS) condition by causing the affected device to reboot unexpectedly, disrupting services and potentially leading to downtime.

Technical Details of CVE-2017-15343

This section provides more technical insights into the CVE-2017-15343 vulnerability.

Vulnerability Description

The vulnerability arises from the lack of proper validation of specific fields in SCTP messages, enabling attackers to exploit an integer overflow condition.

Affected Systems and Versions

Product: AR3200
Vendor: Huawei Technologies Co., Ltd.
Versions: V200R006C10, V200R006C11, V200R007C00, V200R007C01, V200R007C02, V200R008C00, V200R008C10, V200R008C20, V200R008C30

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted SCTP messages to the device without authentication, triggering the integer overflow and causing a system reboot.

Mitigation and Prevention

To address CVE-2017-15343, users and administrators should take the following steps:

Immediate Steps to Take

Apply patches provided by Huawei to fix the vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update and patch all network devices to protect against known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Educate users and administrators about best practices for network security.

Patching and Updates

Huawei has released patches to address the vulnerability in affected software versions. Ensure timely application of these patches to secure the network.