CVE-2022-23632 : Vulnerability Insights and Analysis
Learn about CVE-2022-23632 affecting Traefik HTTP reverse proxy. Understand the impact, technical details, and mitigation steps for this high-severity vulnerability.
Traefik skips the router TLS configuration when the host header is an FQDN.
Understanding CVE-2022-23632
This CVE affects Traefik, an HTTP reverse proxy and load balancer, with versions prior to 2.6.1.
What is CVE-2022-23632?
Traefik, before version 2.6.1, has a vulnerability that skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). This can lead to using a wrong TLS configuration for the request.
The Impact of CVE-2022-23632
The impact of this vulnerability is rated as high (CVSS base score of 7.4) with high confidentiality and integrity impact. The attack complexity is high, and it requires no special privileges, exploiting it from a network.
Technical Details of CVE-2022-23632
This section covers specific technical details of the CVE.
Vulnerability Description
Before version 2.6.1, Traefik does not correctly apply the TLS configuration when handling requests with fully qualified domain names (FQDNs), potentially exposing sensitive information.
Affected Systems and Versions
Versions of Traefik prior to 2.6.1 are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability over the network without requiring any special user interaction, impacting the confidentiality and integrity of the system.
Mitigation and Prevention
To mitigate the risks associated with CVE-2022-23632, immediate steps must be taken, along with implementing long-term security practices.
Immediate Steps to Take
Update Traefik to version 2.6.1 or later to patch this vulnerability. If unable to update immediately, consider adding the FQDN to the host rule as a temporary workaround.
Long-Term Security Practices
Regularly update Traefik and other software components to their latest versions to ensure that known vulnerabilities are addressed promptly.
Patching and Updates
Ensure that your Traefik installation is always up to date by monitoring for security advisories and applying patches as soon as they are available.