CVE-2017-17783 : Security Advisory and Response
Learn about CVE-2017-17783, a buffer over-read vulnerability in GraphicsMagick 1.3.27a's ReadPALMImage function. Find out how to mitigate the risk and prevent exploitation.
GraphicsMagick 1.3.27a is susceptible to a buffer over-read vulnerability in the ReadPALMImage function when QuantumDepth is set to 8 in the palm.c file.
Understanding CVE-2017-17783
When the QuantumDepth is configured to 8 in GraphicsMagick 1.3.27a, a buffer over-read issue arises in the ReadPALMImage function.
What is CVE-2017-17783?
This CVE refers to a specific vulnerability in GraphicsMagick 1.3.27a that allows for a buffer over-read when certain configurations are set in the palm.c file.
The Impact of CVE-2017-17783
The vulnerability can potentially lead to a situation where an attacker could exploit the buffer over-read to execute arbitrary code or cause a denial of service.
Technical Details of CVE-2017-17783
GraphicsMagick 1.3.27a is affected by a buffer over-read in the ReadPALMImage function due to the mismanagement of memory when QuantumDepth is set to 8.
Vulnerability Description
The issue occurs in the ReadPALMImage function within the palm.c file, leading to a buffer over-read vulnerability.
Affected Systems and Versions
- Product: GraphicsMagick 1.3.27a
- Vendor: GraphicsMagick
- Versions: All versions with QuantumDepth set to 8
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious image file and tricking a user or system into processing it with GraphicsMagick, triggering the buffer over-read.
Mitigation and Prevention
To address CVE-2017-17783, immediate steps and long-term security practices are recommended.
Immediate Steps to Take
- Update GraphicsMagick to the latest version that includes a patch for the vulnerability.
- Avoid processing untrusted image files with GraphicsMagick until the patch is applied.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement proper input validation and sanitization to prevent exploitation of similar vulnerabilities.
Patching and Updates
Ensure that GraphicsMagick is regularly updated to the latest version to mitigate the CVE-2017-17783 vulnerability.