CVE-2019-5300 : What You Need to Know

A vulnerability has been identified in Huawei routers including AR1200, AR1200-S, AR150, AR160, AR200, AR2200, AR2200-S, AR3200, SRG1300, SRG2300, and SRG3300. This vulnerability allows a local attacker with high privileges to bypass the verification of digital signatures for the device's software image. As a result, the attacker can install a malicious software image on the affected device by evading integrity checks for software images.

Understanding CVE-2019-5300

This CVE involves a digital signature verification bypass vulnerability in various Huawei routers.

What is CVE-2019-5300?

The vulnerability allows a local attacker with high privileges to bypass digital signature verification, enabling the installation of malicious software images on affected devices.

The Impact of CVE-2019-5300

The vulnerability poses a significant risk as it allows attackers to compromise the integrity of the software running on Huawei routers, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-5300

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability arises from the affected software improperly verifying digital signatures for the software image, enabling attackers to bypass integrity checks.

Affected Systems and Versions

Products: AR1200, AR1200-S, AR150, AR160, AR200, AR2200, AR2200-S, AR3200, SRG1300, SRG2300, SRG3300
Versions: AR1200 V200R008C50, AR1200 V200R009C00, AR1200 V200R010C00, AR1200-S V200R007C00, AR1200-S V200R008C20, AR1200-S V200R008C50, AR1200-S V200R009C00, AR1200-S V200R010C00, AR150 V200R007C00, AR150 V200R008C20, AR150 V200R008C50, AR150 V200R009C00, AR150 V200R010C00, AR160 V200R007C00, AR160 V200R008C20, AR160 V200R008C50, AR160 V200R009C00

Exploitation Mechanism

The vulnerability allows a local attacker to exploit the flaw by evading integrity checks for software images, leading to the installation of malicious software on the device.

Mitigation and Prevention

Protecting systems from CVE-2019-5300 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Huawei promptly.
Monitor network traffic for any suspicious activities.
Restrict access to vulnerable devices.

Long-Term Security Practices

Regularly update and patch all network devices.
Implement strong access controls and authentication mechanisms.
Conduct security audits and assessments periodically.

Patching and Updates

Ensure that all affected Huawei routers are updated with the latest firmware patches to mitigate the vulnerability.