cve/2018/CVE-2018-15599.md

CVE-2018-15599

Description

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.

POC

Reference

• http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html
• https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/odolezal/silvercrest_zigbee_gateway
• https://github.com/xtaran/dist-detect