CVE-2021-45950 : What You Need to Know

LibreDWG 0.12.4.4313 through 0.12.4.4367 has an out-of-bounds write vulnerability.

Understanding CVE-2021-45950

LibreDWG version 0.12.4.4313 through 0.12.4.4367 is susceptible to an out-of-bounds write vulnerability, leading to potential security risks.

What is CVE-2021-45950?

The vulnerability involves an out-of-bounds write in dwg_free_BLOCK_private function, which is called from dwg_free_BLOCK and dwg_free_object.

The Impact of CVE-2021-45950

The vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the out-of-bounds write issue.

Technical Details of CVE-2021-45950

Vulnerability Description

An out-of-bounds write vulnerability in LibreDWG 0.12.4.4313 through 0.12.4.4367 in the dwg_free_BLOCK_private function.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions: 0.12.4.4313 - 0.12.4.4367

Exploitation Mechanism

The vulnerability can be exploited by an attacker to manipulate memory allocation, potentially leading to arbitrary code execution or denial of service.

Mitigation and Prevention

Immediate Steps to Take

Implement patches provided by the vendor as soon as they are available.
Monitor vendor communications for updates and security advisories related to the vulnerability.

Long-Term Security Practices

Regularly update software and applications to the latest versions to prevent known vulnerabilities.
Conduct security audits and code reviews to identify and address similar issues in other parts of the codebase.
Employ network security measures such as firewalls and intrusion detection/prevention systems.

Patching and Updates

Apply patches and updates released by LibreDWG promptly to mitigate the vulnerability and enhance system security.