CVE-2020-10938 : Security Advisory and Response

GraphicsMagick before 1.3.35 has an integer overflow and resultant heap-based buffer overflow in HuffmanDecodeImage in magick/compress.c.

Understanding CVE-2020-10938

GraphicsMagick software versions prior to 1.3.35 are susceptible to an integer overflow vulnerability leading to a heap-based buffer overflow.

What is CVE-2020-10938?

The CVE-2020-10938 vulnerability in GraphicsMagick is caused by an integer overflow issue in the HuffmanDecodeImage function within the magick/compress.c file.

The Impact of CVE-2020-10938

This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) condition on the affected system.

Technical Details of CVE-2020-10938

GraphicsMagick before version 1.3.35 is affected by this vulnerability.

Vulnerability Description

The vulnerability involves an integer overflow and subsequent heap-based buffer overflow in the HuffmanDecodeImage function.

Affected Systems and Versions

Product: GraphicsMagick
Vendor: N/A
Versions affected: N/A

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious image file that triggers the integer overflow, leading to a buffer overflow.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-10938.

Immediate Steps to Take

Update GraphicsMagick to version 1.3.35 or later to address the vulnerability.
Consider implementing appropriate network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from GraphicsMagick and relevant vendors.
Monitor security mailing lists and community forums for any emerging information on vulnerabilities and patches.