UBUNTU-CVE-2018-15599

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Source
https://ubuntu.com/security/CVE-2018-15599
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-15599.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-15599
Upstream
Published
2018-08-21T01:29:00Z
Modified
2025-10-24T04:47:10Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

The recvmsguserauthrequest function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSHMSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase.

References

Affected packages

Ubuntu:16.04:LTS / dropbear

Package

Name
dropbear
Purl
pkg:deb/ubuntu/dropbear@2016.72-1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2014.*

2014.65-1ubuntu2

2015.*

2015.68-1
2015.70-1
2015.71-1

2016.*

2016.72-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2016.72-1",
            "binary_name": "dropbear"
        },
        {
            "binary_version": "2016.72-1",
            "binary_name": "dropbear-bin"
        },
        {
            "binary_version": "2016.72-1",
            "binary_name": "dropbear-initramfs"
        },
        {
            "binary_version": "2016.72-1",
            "binary_name": "dropbear-run"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / dropbear

Package

Name
dropbear
Purl
pkg:deb/ubuntu/dropbear@2017.75-3ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2017.*

2017.75-2
2017.75-3build1
2017.75-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2017.75-3ubuntu0.1~esm1",
            "binary_name": "dropbear"
        },
        {
            "binary_version": "2017.75-3ubuntu0.1~esm1",
            "binary_name": "dropbear-bin"
        },
        {
            "binary_version": "2017.75-3ubuntu0.1~esm1",
            "binary_name": "dropbear-initramfs"
        },
        {
            "binary_version": "2017.75-3ubuntu0.1~esm1",
            "binary_name": "dropbear-run"
        }
    ]
}