CVE-2018-1000115 : What You Need to Know
Learn about CVE-2018-1000115, a vulnerability in memcached server version 1.5.5 leading to a denial of service risk due to insufficient control of network message volume. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
This CVE involves a vulnerability in the UDP support of memcached server version 1.5.5, leading to a denial of service risk due to insufficient control of network message volume.
Understanding CVE-2018-1000115
This CVE pertains to a vulnerability in the UDP support of memcached server version 1.5.5, potentially resulting in a denial of service through network flood.
What is CVE-2018-1000115?
The vulnerability in memcached server version 1.5.5 allows for network amplification, leading to a denial of service risk through a network flood. The issue is exploitable via network connectivity to UDP port 11211.
The Impact of CVE-2018-1000115
The vulnerability could result in a denial of service attack due to network amplification, with reported traffic amplification of 1:50,000. This could potentially disrupt services and impact system availability.
Technical Details of CVE-2018-1000115
This section provides technical insights into the vulnerability.
Vulnerability Description
The vulnerability in memcached server version 1.5.5 is categorized as Insufficient Control of Network Message Volume (Network Amplification, CWE-406), allowing for a denial of service risk through network flood.
Affected Systems and Versions
- Affected Version: 1.5.5
- Fixed Version: 1.5.6 (UDP protocol disabled by default)
Exploitation Mechanism
The vulnerability is exploitable through network connectivity to UDP port 11211, enabling attackers to potentially launch denial of service attacks.
Mitigation and Prevention
Protective measures and actions to mitigate the impact of CVE-2018-1000115.
Immediate Steps to Take
- Update memcached server to version 1.5.6 where the UDP protocol is disabled by default.
- Implement network security controls to restrict access to UDP port 11211.
Long-Term Security Practices
- Regularly monitor and patch software vulnerabilities to prevent exploitation.
- Conduct security assessments and audits to identify and address potential risks.
Patching and Updates
- Apply patches and updates provided by memcached to address the vulnerability and enhance system security.