CVE-2019-1010251 Explained : Impact and Mitigation
Learn about CVE-2019-1010251 affecting Suricata prior to version 4.1.2. Understand the impact, affected systems, exploitation mechanism, and mitigation steps to prevent a Denial of Service attack.
Open Information Security Foundation Suricata prior to version 4.1.2 is vulnerable to a DNS detection bypass, leading to a Denial of Service attack when a specially crafted network packet is sent.
Understanding CVE-2019-1010251
This CVE involves a vulnerability in Suricata that allows attackers to bypass DNS detection, potentially resulting in a Denial of Service attack.
What is CVE-2019-1010251?
The vulnerability in Suricata prior to version 4.1.2 enables attackers to evade signature detection by sending a specially crafted network packet, impacting specific components within the system.
The Impact of CVE-2019-1010251
- Attackers can trigger a Denial of Service attack by exploiting the vulnerability in Suricata.
- The evasion of signature detection can lead to network downtime and potential service disruption.
Technical Details of CVE-2019-1010251
Suricata vulnerability details and affected systems.
Vulnerability Description
- The vulnerability allows for a DNS detection bypass in Suricata prior to version 4.1.2.
- Affected components include app-layer-detect-proto.c, decode.c, decode-teredo.c, and decode-ipv6.c.
Affected Systems and Versions
- Product: Suricata
- Vendor: Open Information Security Foundation
- Versions Affected: Prior to version 4.1.2
Exploitation Mechanism
- Attackers exploit the vulnerability by sending a specifically crafted network request to trigger the issue.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2019-1010251 vulnerability.
Immediate Steps to Take
- Update Suricata to version 4.1.2 or later to patch the vulnerability.
- Monitor network traffic for any suspicious activity that could indicate an ongoing attack.
Long-Term Security Practices
- Regularly update and patch all software and systems to prevent known vulnerabilities.
- Implement network intrusion detection systems to detect and respond to potential threats.
Patching and Updates
- Stay informed about security updates and patches released by the Open Information Security Foundation to address vulnerabilities like CVE-2019-1010251.