CVE-2017-17723 : Security Advisory and Response
Learn about CVE-2017-17723, a vulnerability in Exiv2 version 0.26 that allows remote attackers to access memory data or disrupt systems via a manipulated TIFF file. Find mitigation steps and prevention measures here.
Exiv2 version 0.26 contains a security vulnerability that allows remote attackers to gain unauthorized access to memory data or disrupt the system.
Understanding CVE-2017-17723
What is CVE-2017-17723?
In Exiv2 0.26, a heap-based buffer over-read in the Exiv2::Image::byteSwap4 function in image.cpp allows attackers to disclose memory data or cause a denial of service via a crafted TIFF file.
The Impact of CVE-2017-17723
This vulnerability enables remote attackers to gain unauthorized access to memory data or disrupt the system by using a manipulated TIFF file.
Technical Details of CVE-2017-17723
Vulnerability Description
The issue lies in excessive reading from a buffer in the Exiv2::Image::byteSwap4 function in the image.cpp file.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Version: 0.26
Exploitation Mechanism
Remote attackers can exploit this vulnerability to disclose memory data or cause a denial of service by using a crafted TIFF file.
Mitigation and Prevention
Immediate Steps to Take
- Update Exiv2 to a patched version.
- Avoid opening untrusted TIFF files.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement network security measures to prevent remote attacks.
Patching and Updates
Apply patches provided by Exiv2 to fix the vulnerability.