CVE-2019-16892 : Vulnerability Insights and Analysis
Learn about CVE-2019-16892, a vulnerability in Rubyzip allowing malicious ZIP files to evade size checks, leading to denial-of-service attacks. Find mitigation steps and updates here.
CVE-2019-16892 is a vulnerability in Rubyzip prior to version 1.3.0 that allows a maliciously-crafted ZIP file to bypass size checks, potentially leading to a denial-of-service attack.
Understanding CVE-2019-16892
What is CVE-2019-16892?
Prior to version 1.3.0, Rubyzip is vulnerable to a security issue where a specially crafted ZIP file can evade size checks, enabling a denial-of-service attack.
The Impact of CVE-2019-16892
An attacker could exploit this vulnerability to cause a denial-of-service attack, resulting in excessive disk consumption.
Technical Details of CVE-2019-16892
Vulnerability Description
- Rubyzip before version 1.3.0 allows a malicious ZIP file to bypass size checks.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Affected Version: n/a
Exploitation Mechanism
- Attackers can falsify information related to the uncompressed size in a ZIP file to carry out the attack.
Mitigation and Prevention
Immediate Steps to Take
- Update Rubyzip to version 1.3.0 or later to mitigate the vulnerability.
- Be cautious when handling ZIP files from untrusted sources.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Implement robust security measures to prevent and detect denial-of-service attacks.
Patching and Updates
- Refer to vendor advisories and patches from sources like Fedora and Red Hat to address the vulnerability.