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CVE-2023-27582

9.1 · CRITICAL

maddy is a composable, all-in-one mail server.

Published Mar 13, 2023CWE-287EPSS 1.02%

Overview

CVE-2023-27582 is a critical-severity vulnerability. It was published on March 13, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

maddy is a composable, all-in-one mail server. Starting with version 0.2.0 and prior to version 0.6.3, maddy allows a full authentication bypass if SASL authorization username is specified when using the PLAIN authentication mechanisms. Instead of validating the specified username, it is accepted as is after checking the credentials for the authentication username. maddy 0.6.3 includes the fix for the bug. There are no known workarounds.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399aGitHubgithub.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9cGitHubgithub.com/foxcpp/maddy/releases/tag/v0.6.3GitHubgithub.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6wGitHubgithub.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399aGitHubgithub.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9cGitHubgithub.com/foxcpp/maddy/releases/tag/v0.6.3GitHubgithub.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6w

How CyberStrike helps

Frequently asked questions

What is CVE-2023-27582?

CVE-2023-27582 is a critical-severity vulnerability. It was published on March 13, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2023-27582?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-27582?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2023-27582?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-27582 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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