CVE-2019-12806 Explained : Impact and Mitigation

A buffer overflow vulnerability in UniSign versions 2.0.4.0 and earlier allows remote attackers to execute arbitrary code via crafted https packets.

Understanding CVE-2019-12806

This CVE involves a stack-based buffer overflow in UniSign, potentially leading to remote code execution.

What is CVE-2019-12806?

The vulnerability in UniSign versions 2.0.4.0 and earlier enables attackers to trigger a stack-based buffer overflow by sending malicious https packets.
This overflow occurs in a library, granting attackers the ability to overwrite the stack with their data.

The Impact of CVE-2019-12806

Remote attackers can exploit this vulnerability to execute arbitrary code on the target system.

Technical Details of CVE-2019-12806

This section provides detailed technical information about the vulnerability.

Vulnerability Description

UniSign 2.0.4.0 and earlier versions contain a stack-based buffer overflow vulnerability that allows overwriting the stack with arbitrary data.

Affected Systems and Versions

Product: UniSign
Vendor: CROSSCERT
Affected Version: 2.0.4.0

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted https packets to the target system, triggering the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-12806 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network-level protections to filter out potentially malicious https packets.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from CROSSCERT for UniSign to apply patches as soon as they are available.