CVE-2017-10868 : Security Advisory and Response
Learn about CVE-2017-10868, a DoS vulnerability in H2O versions prior to 2.2.2. Remote attackers can disrupt server functionality by manipulating HTTP/1 headers.
CVE-2017-10868, published on December 22, 2017, details a vulnerability in H2O versions prior to 2.2.2 that allows remote attackers to disrupt server functionality through a manipulated HTTP/1 header.
Understanding CVE-2017-10868
This CVE entry highlights a denial-of-service (DoS) vulnerability in H2O versions before 2.2.2.
What is CVE-2017-10868?
CVE-2017-10868 exposes a flaw in H2O that enables attackers to trigger a DoS attack by sending a specifically crafted HTTP/1 header.
The Impact of CVE-2017-10868
The vulnerability in H2O versions prior to 2.2.2 can be exploited by remote attackers to disrupt server operations, potentially leading to service unavailability.
Technical Details of CVE-2017-10868
This section delves into the technical aspects of the CVE.
Vulnerability Description
The issue in H2O versions before 2.2.2 allows attackers to exploit a specially crafted HTTP/1 header to cause a DoS condition on the server.
Affected Systems and Versions
- Product: H2O
- Vendor: Kazuho Oku
- Versions Affected: version 2.2.2 and earlier
Exploitation Mechanism
Attackers can disrupt H2O servers by sending manipulated HTTP/1 headers, exploiting the vulnerability in versions preceding 2.2.2.
Mitigation and Prevention
Protecting systems from CVE-2017-10868 involves immediate actions and long-term security practices.
Immediate Steps to Take
- Update H2O to version 2.2.2 or later to mitigate the vulnerability.
- Monitor network traffic for any suspicious activity targeting HTTP headers.
Long-Term Security Practices
- Regularly apply security patches and updates to all software components.
- Implement network intrusion detection systems to identify and block malicious traffic.
- Conduct security assessments and penetration testing to uncover and address vulnerabilities.
- Educate staff on cybersecurity best practices to enhance overall defense.
Patching and Updates
Ensure timely installation of patches and updates for H2O to address known vulnerabilities and enhance system security.