CVE-2018-15599

CVSS V2 Medium 5 CVSS V3 Medium 5.3
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.
Overview
  • CVE ID
  • CVE-2018-15599
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-08-21T01:29:00
  • Last Modified Date
  • 2020-12-30T20:15:13
Weakness Enumerations
CWE URL
CWE-200 http://cwe.mitre.org/data/definitions/200.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* 1 OR 2018.76
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-15599
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15599
History
Created Old Value New Value Data Type Notes
2022-05-10 07:29:05 Added to TrackCVE
2022-12-03 11:20:53 2018-08-21T01:29Z 2018-08-21T01:29:00 CVE Published Date updated
2022-12-03 11:20:53 2020-12-30T20:15:13 CVE Modified Date updated
2022-12-03 11:20:53 Modified Vulnerability Status updated