CVE-2020-25665 : What You Need to Know
Learn about CVE-2020-25665, a vulnerability in ImageMagick versions prior to 7.0.8-68, causing an out-of-bounds read due to an improper call in the PALM image coder. Find mitigation steps and patching details here.
CVE-2020-25665 is a vulnerability in ImageMagick versions prior to 7.0.8-68 that can lead to an out-of-bounds read due to an improper call in the PALM image coder. This flaw could impact reliability.
Understanding CVE-2020-25665
What is CVE-2020-25665?
The vulnerability arises from an incorrect call to AcquireQuantumMemory() in the WritePALMImage() routine, requiring an offset by 256, potentially causing an out-of-bounds read later in the routine.
The Impact of CVE-2020-25665
This vulnerability could impact the reliability of ImageMagick versions prior to 7.0.8-68, allowing for potential out-of-bounds reads.
Technical Details of CVE-2020-25665
Vulnerability Description
The flaw in the PALM image coder at coders/palm.c results from the need to offset by 256 in the call to AcquireQuantumMemory(), potentially leading to an out-of-bounds read.
Affected Systems and Versions
- Vendor: n/a
- Product: ImageMagick
- Affected Versions: prior to 7.0.8-68
Exploitation Mechanism
The vulnerability can be exploited by manipulating the bytes_per_row parameter in the call to AcquireQuantumMemory(), causing an out-of-bounds read.
Mitigation and Prevention
Immediate Steps to Take
- Apply the patch provided by ImageMagick to address the vulnerability.
- Monitor for any unusual activities that could indicate exploitation of the flaw.
Long-Term Security Practices
- Regularly update ImageMagick to the latest version to ensure all security patches are applied.
Patching and Updates
Ensure timely installation of updates and patches released by ImageMagick to mitigate the vulnerability.