CVE-2021-36369
7.5 · HIGHOverview
CVE-2021-36369 is a high-severity vulnerability affecting dropbear_ssh_project dropbear_ssh. It was published on October 12, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.
Remediation
Check the references section for vendor advisories and patches from dropbear_ssh_project. Update dropbear_ssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| dropbear_ssh_project | dropbear_ssh | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-36369?
CVE-2021-36369 is a high-severity vulnerability affecting dropbear_ssh_project dropbear_ssh. It was published on October 12, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-36369?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-36369?
Check the references section for vendor advisories and patches from dropbear_ssh_project. Update dropbear_ssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-36369?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-36369 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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