CVE-2021-40402 : Vulnerability Insights and Analysis
Learn about CVE-2021-40402, an out-of-bounds read vulnerability in Gerbv software versions 2.7.0, dev (commit b5f1eacd), 2.7.1, and 2.8.0. Discover the impact, affected systems, and mitigation steps.
This CVE-2021-40402 article provides all the essential information about an out-of-bounds read vulnerability found in Gerbv software.
Understanding CVE-2021-40402
This section delves into the details of the vulnerability.
What is CVE-2021-40402?
An out-of-bounds read vulnerability exists in the RS-274X aperture macro multiple outline primitives functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.7.1 and 2.8.0. A specially-crafted Gerber file can lead to information disclosure, allowing an attacker to trigger this vulnerability.
The Impact of CVE-2021-40402
The vulnerability has a CVSS base score of 9.3, classifying it as critical. The attack complexity is low with a high impact on availability. However, it has low impact on confidentiality and no impact on integrity. No user interaction or privileges are required, with a scope of changed.
Technical Details of CVE-2021-40402
Exploring the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in Gerbv software allows for an out-of-bounds read, potentially resulting in information disclosure by processing a malicious Gerber file.
Affected Systems and Versions
Product: Gerbv
- Versions Affected: 2.7.0, dev (commit b5f1eacd)
Product: Gerbv forked
- Versions Affected: 2.7.1, 2.8.0
Exploitation Mechanism
The vulnerability can be exploited by providing a specially-crafted Gerber file to trigger the out-of-bounds read, leading to potential information disclosure.
Mitigation and Prevention
Understanding how to mitigate the CVE-2021-40402 vulnerability.
Immediate Steps to Take
- Apply the vendor's patch for the affected versions.
- Avoid opening Gerber files from untrusted sources.
- Monitor for any unusual file processing behavior.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security training to educate users on safe file handling practices.
Patching and Updates
It is crucial to promptly apply patches released by Gerbv to address the vulnerability and enhance system security.