5.4

CVSS Score

3.1

-

CVSS Score

Basic Information

Concerned about an active attack path?

Talk to our security experts and see Miggo in action.

Miggo Vulnerability Database

→

CVE-2021-41092

CVE-2021-41092: Docker CLI leaks private registry credentials to registry-1.docker.io

Impact

A bug was found in the Docker CLI where running docker login my-private-registry.example.com with a misconfigured configuration file (typically ~/.docker/config.json) listing a credsStore or credHelpers that could not be executed would result in any provided credentials being sent to registry-1.docker.io rather than the intended private registry.

Patches

This bug has been fixed in Docker CLI 20.10.9. Users should update to this version as soon as possible.

Workarounds

Ensure that any configured credsStore or credHelpers entries in the configuration file reference an installed credential helper that is executable and on the PATH.

For more information

If you have any questions or comments about this advisory:

Open an issue
Email us at security@docker.com if you think you’ve found a security bug

(GitHub Advisory)

Miggo Vulnerability Database

→

CVE-2021-41092

CVE-2021-41092:

5.4

CVSS Score

3.1

-

CVSS Score

Basic Information

Is this CVE running in your environment?

Easily map the attack path and prioritize which CVEs are a threat to your organization

Validate Exposure

Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
github.com/docker/cli	go	< 20.10.9	20.10.9

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from how credential helpers are handled in authentication flow. The commit diff shows critical changes to GetDefaultAuthConfig's error handling - previously returning nil AuthConfig on helper errors (leading to default registry fallback), now returning a struct with serverAddress. The added test TestGetDefaultAuthConfig_HelperError in registry_test.go validates this fix. ConfigureAuth's parameter handling changes (pointer vs value) in login.go and registry.go indicate it was part of the credential flow that failed to properly validate helper executability before falling back to insecure behavior.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

Unlock WAF rules for this CVE

Generate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance

Get WAF rules

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.

5.4

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2021-41092: Docker CLI leaks private registry credentials to registry-1.docker.io

Impact

Patches

Workarounds

For more information

CVE-2021-41092:

5.4

-

Basic Information

Basic Information

Is this CVE running in your environment?

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Vulnerability IntelligenceMiggo AI

Unlock WAF rules for this CVE

WAF Protection Rules

WAF Rule

Reasoning

5.4

5.4

Technical Details

Basic Information

Basic Information

CVE-2021-41092: Docker CLI leaks private registry credentials to registry-1.docker.io

Impact

Patches

Workarounds

For more information

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI