The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-dropbear | Nov 9, 2018 | Aug 21, 2018 | |
| Debian | debian-upgrade-dropbear | Feb 19, 2019 | Aug 20, 2018 | |
| Ubuntu | no-fix-ubuntu-package | Jun 26, 2025 | Aug 21, 2018 |
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