CVE-2019-3573 : Security Advisory and Response

This CVE-2019-3573 article provides insights into a vulnerability in libsixel v1.8.2, specifically in the function sixel_decode_raw_impl() in the file fromsixel.c, leading to an endless loop.

Understanding CVE-2019-3573

This section delves into the details of the CVE-2019-3573 vulnerability.

What is CVE-2019-3573?

CVE-2019-3573 is a vulnerability identified in libsixel v1.8.2, involving an infinite loop in the sixel_decode_raw_impl() function in the file fromsixel.c. The issue was demonstrated using the sixel2png tool.

The Impact of CVE-2019-3573

The presence of an endless loop in the sixel_decode_raw_impl() function can lead to denial of service (DoS) attacks and potential system instability.

Technical Details of CVE-2019-3573

This section provides technical insights into the CVE-2019-3573 vulnerability.

Vulnerability Description

The vulnerability in libsixel v1.8.2 allows for an infinite loop in the sixel_decode_raw_impl() function, as showcased by the sixel2png tool.

Affected Systems and Versions

Affected Version: libsixel v1.8.2
Product: Not applicable
Vendor: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by triggering the sixel_decode_raw_impl() function, causing it to enter an endless loop.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2019-3573 vulnerability.

Immediate Steps to Take

Update libsixel to a patched version that addresses the infinite loop issue.
Monitor system performance for any signs of DoS attacks.

Long-Term Security Practices

Regularly update software and libraries to prevent known vulnerabilities.
Conduct security audits to identify and address potential loopholes.

Patching and Updates

Apply patches and updates provided by the libsixel maintainers to eliminate the infinite loop vulnerability.