CVE-2021-21335
5.3 · MEDIUMOverview
CVE-2021-21335 is a medium-severity vulnerability affecting spnego_http_authentication_module_project spnego_http_authentication_module. It was published on March 8, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In the SPNEGO HTTP Authentication Module for nginx (spnego-http-auth-nginx-module) before version 1.1.1 basic Authentication can be bypassed using a malformed username. This affects users of spnego-http-auth-nginx-module that have enabled basic authentication. This is fixed in version 1.1.1 of spnego-http-auth-nginx-module. As a workaround, one may disable basic authentication.
Remediation
Check the references section for vendor advisories and patches from spnego_http_authentication_module_project. Update spnego_http_authentication_module 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 |
|---|---|---|---|
| spnego_http_authentication_module_project | spnego_http_authentication_module | >= 0, < 1.1.1 | Affected |
References
Frequently Asked Questions
What is CVE-2021-21335?
CVE-2021-21335 is a medium-severity vulnerability affecting spnego_http_authentication_module_project spnego_http_authentication_module. It was published on March 8, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2021-21335?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-21335?
Check the references section for vendor advisories and patches from spnego_http_authentication_module_project. Update spnego_http_authentication_module 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-2021-21335?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21335 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
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