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testssl

Testssl is a versatile security tool designed for automated workflows in Canva, specifically focused on evaluating SSL/TLS enabled services for supported ciphers, protocols, and cryptographic flaws. Its primary role in security automation is to enhance reconnaissance efforts by identifying potential vulnerabilities in target systems.

Ideal Use Cases & Fit​

Testssl is ideal for scenarios where organizations need to assess the security posture of their SSL/TLS configurations. It excels in environments where comprehensive security assessments are required, such as during routine audits or before deploying services. The tool is particularly useful for checking the strength and configuration of SSL/TLS ciphers and for identifying common vulnerabilities, making it a vital asset in proactive security strategies. However, it may not be suitable for real-time monitoring of SSL/TLS services due to its static analysis nature.

Value in Workflows​

In security workflows, testssl adds significant value by providing detailed insights into SSL/TLS configurations early in the reconnaissance phase. By integrating testssl into automated workflows, organizations can streamline vulnerability assessments and enhance their overall security posture. This automation enables teams to efficiently detect and remediate vulnerabilities before they can be exploited, thereby reducing risk and improving compliance with security standards.

Input Data​

The tool requires newline-separated targets in the following formats:

  • host
  • host:port (port defaults to 443 if not specified)
  • https://host:port

Example input:

example.com
example.com:443
https://example.com:8443
192.168.1.10
192.168.1.11:8443

Configuration​

  • starttls: Defines the STARTTLS protocol (e.g., ftp, smtp, imap).
  • sneaky: Enables a less verbose user agent and HTTP headers for stealth.
  • openssl-timeout: Sets the timeout for OpenSSL connections in seconds.
  • fast: Skips some time-consuming checks for quicker results.
  • protocols: Checks only for TLS/SSL protocols.
  • vulnerabilities: Tests for known vulnerabilities, such as Heartbleed.
  • connect-timeout: Maximum seconds to wait for TCP socket connect attempts.
  • ids-friendly: Skips specific vulnerability checks to avoid triggering IDS/IPS alerts.

By utilizing these parameters, users can tailor testssl to fit their specific security needs within automated workflows.