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MEDIUM6.3

GHSA-6cp7-g972-w9m9

Use of a Key Past its Expiration Date and Insufficient Session Expiration in Maddy Mail Server

Quick fix

GHSA-6cp7-g972-w9m9 — github.com/foxcpp/maddy: upgrade to the fixed version with the command below.

go get github.com/foxcpp/maddy@v0.5.4

Details

### Impact

Any configuration on any maddy version <0.5.4 using auth.pam is affected.

No password expiry or account expiry checking is done when authenticating using PAM.

### Patches

Patch is available as part of the 0.5.4 release.

### Workarounds

If /etc/shadow authentication is used, it is possible to replace auth.pam with auth.shadow which is not affected.

It is possible to blacklist expired accounts via existing filtering mechanisms (e.g. auth_map to invalid accounts in storage.imapsql).

### References

* https://github.com/foxcpp/maddy/blob/3412e59a2c92106e194fa69f2f1017c020037c9c/internal/auth/pam/pam.c * https://linux.die.net/man/3/pam_acct_mgmt

### For more information If you have any questions or comments about this advisory: * Open an issue in https://github.com/foxcpp/maddy * Email fox.cpp@disroot.org

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/foxcpp/maddy
Introduced in: 0Fixed in: 0.5.4
Fixgo get github.com/foxcpp/maddy@v0.5.4

References