CVE-2020-18774 : Exploit Details and Defense Strategies
Learn about CVE-2020-18774, a vulnerability in Exiv2 0.27.99.0 that allows attackers to cause a denial of service via a crafted tif file. Find out the impact, affected systems, and mitigation steps.
CVE-2020-18774 is a vulnerability in the Exiv2 software that can lead to a denial of service attack. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2020-18774
What is CVE-2020-18774?
The vulnerability CVE-2020-18774 is a float point exception in the printLong function in tags_int.cpp of Exiv2 0.27.99.0. Attackers can exploit this issue to cause a denial of service (DOS) by using a crafted tif file.
The Impact of CVE-2020-18774
This vulnerability can result in a denial of service (DOS) attack, disrupting the normal operation of the affected software.
Technical Details of CVE-2020-18774
Vulnerability Description
The vulnerability lies in the printLong function in tags_int.cpp of Exiv2 0.27.99.0, allowing attackers to trigger a float point exception.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions Affected: Exiv2 0.27.99.0
Exploitation Mechanism
Attackers can exploit this vulnerability by using a specially crafted tif file to trigger the float point exception in the printLong function.
Mitigation and Prevention
Immediate Steps to Take
- Avoid opening or processing untrusted tif files.
- Implement file type and content validation mechanisms.
Long-Term Security Practices
- Regularly update Exiv2 software to the latest version.
- Conduct security assessments and audits to identify and address vulnerabilities.
Patching and Updates
Apply patches provided by Exiv2 to address the CVE-2020-18774 vulnerability.