CVE Vulnerability

CVE-2018-15599

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/ Third Party Advisory
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.html Mailing List Third Party Advisory
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/08/msg00026.html Mailing List Third Party Advisory
https://matt.ucc.asn.au/dropbear/CHANGES
Configurations

Configuration 1

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
Information

Published : 2018-08-21 01:29

Updated : 2020-12-30 08:15

NVD link : CVE-2018-15599

Mitre link : CVE-2018-15599

Products Affected
No products.
CWE
CWE-200