CVE-2017-7856 is a heap-based buffer overflow vulnerability in LibreOffice before March 11, 2017, allowing attackers to execute arbitrary code. Learn about the impact, affected systems, exploitation, and mitigation steps.
An out-of-bounds write issue in LibreOffice prior to March 11, 2017, caused by a heap-based buffer overflow in the function SVMConverter::ImplConvertFromSVM1.
Understanding CVE-2017-7856
What is CVE-2017-7856?
CVE-2017-7856 is a vulnerability in LibreOffice that allows attackers to trigger a heap-based buffer overflow.
The Impact of CVE-2017-7856
This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service on the affected system.
Technical Details of CVE-2017-7856
Vulnerability Description
The issue is due to a heap-based buffer overflow in the function SVMConverter::ImplConvertFromSVM1 in the file svmconverter.cxx within the vcl/source/gdi directory.
Affected Systems and Versions
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious document and tricking a user into opening it, leading to the execution of arbitrary code.
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Ensure that all software, including LibreOffice, is regularly updated to mitigate known vulnerabilities.