useradd in shadow-utils before 4.0.3, and possibly other versions before 4.0.8, does not provide a required argument to the open function when creating a new user mailbox, which causes the mailbox to be created with unpredictable permissions and possibly allows attackers to read or modify the mailbox.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade shadow | Jul 30, 2024 | May 28, 2006 |
| Gentoo Linux | — | Upgrade sys-apps/shadow. | Oct 30, 2017 | May 28, 2006 |
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