CVE-2020-35511 Explained : Impact and Mitigation
Learn about CVE-2020-35511, a global buffer overflow vulnerability in pngcheck-2.4.0 that could allow arbitrary code execution or denial of service. Find mitigation steps and prevention measures.
A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0 via a crafted png file.
Understanding CVE-2020-35511
A buffer overflow vulnerability in pngcheck-2.4.0 could allow an attacker to execute arbitrary code or cause a denial of service.
What is CVE-2020-35511?
The CVE-2020-35511 vulnerability involves a global buffer overflow in the pngcheck function within pngcheck-2.4.0 when processing a maliciously crafted png file.
The Impact of CVE-2020-35511
This vulnerability could be exploited by an attacker to execute arbitrary code on the affected system or trigger a denial of service condition.
Technical Details of CVE-2020-35511
Vulnerability Description
A global buffer overflow was found in the pngcheck function in pngcheck-2.4.0, potentially leading to arbitrary code execution or denial of service.
Affected Systems and Versions
- Vendor: n/a
- Product: pngcheck
- Versions Affected: pngcheck-2.4.0
Exploitation Mechanism
The vulnerability can be exploited by an attacker by crafting a malicious png file to trigger the buffer overflow in the pngcheck function.
Mitigation and Prevention
Immediate Steps to Take
- Update pngcheck to a non-vulnerable version.
- Avoid opening untrusted png files.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Ensure that pngcheck is regularly updated to the latest version to mitigate the CVE-2020-35511 vulnerability.