CVE-2020-35521 Explained : Impact and Mitigation
Discover the impact of CVE-2020-35521, a flaw in libtiff allowing denial of service. Learn about affected systems, exploitation, and mitigation steps to secure your environment.
A flaw in libtiff can lead to denial of service due to a memory allocation failure. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2020-35521
What is CVE-2020-35521?
A vulnerability in libtiff can be exploited by a crafted TIFF file, causing an abort and denial of service.
The Impact of CVE-2020-35521
The vulnerability can result in denial of service by exploiting a memory allocation failure in libtiff's tif_read.c.
Technical Details of CVE-2020-35521
Vulnerability Description
A flaw in libtiff allows attackers to trigger an abort through a specially crafted TIFF file, leading to denial of service.
Affected Systems and Versions
- Product: libtiff
- Version: 4.2.0
Exploitation Mechanism
The vulnerability is exploited by manipulating a TIFF file to trigger a memory allocation failure in tif_read.c.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches promptly
- Restrict access to TIFF files from untrusted sources
Long-Term Security Practices
- Regularly update software and libraries
- Conduct security assessments and audits
Patching and Updates
Ensure timely installation of patches and updates provided by the vendor.