CVE-2018-12706 Explained : Impact and Mitigation

DIGISOL DG-BR4000NG devices are vulnerable to a Buffer Overflow via an excessively long Authorization HTTP header.

Understanding CVE-2018-12706

The vulnerability was made public on June 24, 2018, and poses a risk to affected systems.

What is CVE-2018-12706?

The vulnerability in DIGISOL DG-BR4000NG devices allows attackers to trigger a Buffer Overflow by sending a specially crafted Authorization HTTP header.

The Impact of CVE-2018-12706

Exploitation of this vulnerability could lead to unauthorized access, denial of service, or potential remote code execution on the affected devices.

Technical Details of CVE-2018-12706

The following technical aspects provide insight into the CVE-2018-12706 vulnerability.

Vulnerability Description

The vulnerability arises from the inability of the device to handle excessively long Authorization HTTP headers, leading to a Buffer Overflow.

Affected Systems and Versions

Product: DIGISOL DG-BR4000NG
Vendor: DIGISOL
Versions: All versions are affected

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted Authorization HTTP header that exceeds the device's buffer capacity, triggering a Buffer Overflow.

Mitigation and Prevention

Protecting systems from CVE-2018-12706 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable remote management if not required
Implement network segmentation to limit exposure
Monitor network traffic for any suspicious activities

Long-Term Security Practices

Regularly update firmware to patch known vulnerabilities
Conduct security assessments and penetration testing

Patching and Updates

Apply patches provided by DIGISOL to address the Buffer Overflow vulnerability in the affected devices.