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CVE-2018-15599

Published: 21 August 2018

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.

Priority

Low

CVSS 3 base score: 5.3

Status

Package Release Status
dropbear
Launchpad, Ubuntu, Debian
Upstream
Released (2018.76-4)
Ubuntu 21.10 (Impish Indri) Not vulnerable
(2018.76-4)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(2018.76-4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(2018.76-4)
Ubuntu 18.04 LTS (Bionic Beaver) Needed

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needed)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was needs-triage)