CVE-2017-8358 : Security Advisory and Response

LibreOffice before March 17, 2017, was vulnerable to an out-of-bounds write issue due to a heap-based buffer overflow in the ReadJPEG function.

Understanding CVE-2017-8358

This CVE entry details a specific vulnerability in LibreOffice that could lead to a security compromise.

What is CVE-2017-8358?

CVE-2017-8358 is a vulnerability in LibreOffice that allowed an attacker to trigger a heap-based buffer overflow through the ReadJPEG function.

The Impact of CVE-2017-8358

The vulnerability could potentially be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) on a system running the affected LibreOffice version.

Technical Details of CVE-2017-8358

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The issue stemmed from a heap-based buffer overflow related to the ReadJPEG function in the vcl/source/filter/jpeg/jpegc.cxx file in LibreOffice.

Affected Systems and Versions

Product: LibreOffice
Vendor: Not applicable
Versions affected: All versions before March 17, 2017

Exploitation Mechanism

The vulnerability could be exploited by crafting a malicious JPEG file that, when processed by LibreOffice, triggers the out-of-bounds write, potentially leading to code execution.

Mitigation and Prevention

Protecting systems from CVE-2017-8358 involves taking immediate and long-term security measures.

Immediate Steps to Take

Update LibreOffice to a patched version released after March 17, 2017.
Avoid opening or processing untrusted JPEG files.

Long-Term Security Practices

Regularly update software to the latest versions to patch known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

LibreOffice users should ensure they are running a version released after March 17, 2017, to mitigate the risk of exploitation.