CVE-2021-46500 : What You Need to Know

Jsish v3.5.0 contains a heap-use-after-free vulnerability via jsi_ArgTypeCheck, potentially leading to a Denial of Service (DoS).

Understanding CVE-2021-46500

This CVE involves a specific vulnerability in Jsish v3.5.0 with potential service disruption implications.

What is CVE-2021-46500?

Jsish v3.5.0 was found to have a heap-use-after-free issue via jsi_ArgTypeCheck in src/jsiFunc.c, which could be exploited to cause a Denial of Service (DoS) attack.

The Impact of CVE-2021-46500

The vulnerability in Jsish v3.5.0 could result in a DoS condition, affecting the availability of services utilizing the software.

Technical Details of CVE-2021-46500

This section provides detailed technical insights into the CVE.

Vulnerability Description

Jsish v3.5.0 is susceptible to a heap-use-after-free vulnerability due to issues in jsi_ArgTypeCheck in src/jsiFunc.c.

Affected Systems and Versions

Affected Product: Not applicable
Affected Vendor: Not applicable
Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by triggering the heap-use-after-free condition via jsi_ArgTypeCheck in src/jsiFunc.c.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Update Jsish to a patched version if available.
Monitor and restrict access to vulnerable systems.
Employ network firewalls and intrusion detection systems to detect and block malicious activities.

Long-Term Security Practices

Conduct regular security assessments and code reviews.
Train developers and sysadmins on secure coding practices.
Stay informed about security advisories and promptly apply patches.

Patching and Updates

Check for security patches or updates provided by Jsish.
Apply relevant patches promptly to mitigate the vulnerability.