CVE-2021-21335

Basic Authentication can be bypassed using a malformed username

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.42%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: stnoonan spnego-http-auth-nginx-module
Published at:
Updated at:

References

Link Tags
https://github.com/stnoonan/spnego-http-auth-nginx-module/security/advisories/GHSA-ww8q-72rx-hc54 third party advisory patch
https://github.com/stnoonan/spnego-http-auth-nginx-module/commit/a06f9efca373e25328b1c53639a48decd0854570 third party advisory patch
https://github.com/stnoonan/spnego-http-auth-nginx-module/releases/tag/v1.1.1 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21335?
CVE-2021-21335 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21335?
To fix CVE-2021-21335, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21335 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21335 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21335?
CVE-2021-21335 affects stnoonan spnego-http-auth-nginx-module.
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