Vulnerability Details : 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.
Vulnerability category: Information leak
Products affected by CVE-2018-15599
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-15599
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-15599
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2018-15599
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-15599
-
https://matt.ucc.asn.au/dropbear/CHANGES
-
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.html
User enumeration in Dropbear 2018.76 and earlierMailing List;Third Party Advisory
-
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html
User enumeration in Dropbear 2018.76 and earlierMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/08/msg00026.html
[SECURITY] [DLA 1476-1] dropbear security updateMailing List;Third Party Advisory
-
https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/
dbzjegrw8o6n0 comments on OpenSSH Username EnumerationThird Party Advisory
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