CVE-2020-12758 : Security Advisory and Response
Learn about CVE-2020-12758, a vulnerability in HashiCorp Consul and Consul Enterprise that could lead to system crashes. Find out how to mitigate the risk and prevent exploitation.
HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. This vulnerability was introduced in version 1.6.0 and fixed in versions 1.6.6 and 1.7.4.
Understanding CVE-2020-12758
This CVE involves a vulnerability in HashiCorp Consul and Consul Enterprise that could lead to a crash under specific configurations.
What is CVE-2020-12758?
CVE-2020-12758 is a vulnerability in HashiCorp Consul and Consul Enterprise that could cause a crash when configured with an abnormally-formed service-router entry.
The Impact of CVE-2020-12758
The impact of this vulnerability is the potential for Consul and Consul Enterprise to crash, affecting the availability and stability of the systems running these services.
Technical Details of CVE-2020-12758
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in HashiCorp Consul and Consul Enterprise could result in a crash when a specific configuration involving an abnormally-formed service-router entry is present.
Affected Systems and Versions
- Affected Systems: HashiCorp Consul and Consul Enterprise
- Affected Versions: Introduced in version 1.6.0, fixed in versions 1.6.6 and 1.7.4
Exploitation Mechanism
The vulnerability can be triggered by configuring Consul or Consul Enterprise with a service-router entry that is not correctly formed, leading to a crash.
Mitigation and Prevention
Protecting systems from CVE-2020-12758 requires specific actions to mitigate the risk and prevent exploitation.
Immediate Steps to Take
- Update HashiCorp Consul and Consul Enterprise to versions 1.6.6 or 1.7.4, where the vulnerability has been fixed.
- Review and adjust service-router configurations to ensure they are correctly formed.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from HashiCorp.
- Conduct thorough testing of configurations and updates to identify vulnerabilities.
Patching and Updates
- Apply patches and updates provided by HashiCorp promptly to address known vulnerabilities and enhance system security.