CVE-2020-23910 : What You Need to Know

CVE-2020-23910 is a stack-based buffer overflow vulnerability in asn1c through v0.9.28 via the function genhash_get in genhash.c.

Understanding CVE-2020-23910

What is CVE-2020-23910?

This CVE refers to a specific vulnerability in the asn1c software up to version 0.9.28, allowing attackers to trigger a stack-based buffer overflow through the genhash_get function in genhash.c.

The Impact of CVE-2020-23910

This vulnerability can be exploited by malicious actors to execute arbitrary code, leading to potential system crashes, denial of service, or even remote code execution.

Technical Details of CVE-2020-23910

Vulnerability Description

The vulnerability arises due to a lack of proper input validation in the genhash_get function, enabling attackers to overwrite the stack buffer and potentially execute malicious code.

Affected Systems and Versions

Affected Vendor: n/a
Affected Product: n/a
Affected Versions: All versions up to asn1c v0.9.28

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the buffer overflow in the genhash_get function, potentially leading to unauthorized code execution.

Mitigation and Prevention

Immediate Steps to Take

Disable or restrict access to vulnerable software components.
Implement network-level controls to filter out potentially malicious traffic.
Regularly monitor and analyze system logs for any unusual activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Keep software and systems up to date with the latest security patches and updates.

Patching and Updates

Check for patches or updates provided by the software vendor to address the buffer overflow vulnerability.