UBUNTU-CVE-2013-4434

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Source
https://ubuntu.com/security/CVE-2013-4434
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-4434.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2013-4434
Upstream
Withdrawn
2025-07-18T16:42:55Z
Published
2013-10-25T23:55:00Z
Modified
2025-07-16T08:10:46.398097Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to discover valid usernames.

References

Affected packages

Ubuntu:14.04:LTS / dropbear

Package

Name
dropbear
Purl
pkg:deb/ubuntu/dropbear@2013.60-1ubuntu2?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2013.60-1ubuntu2

Affected versions

2012.*

2012.55-1.3ubuntu1
2012.55-1.4ubuntu1

2013.*

2013.60-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dropbear",
            "binary_version": "2013.60-1ubuntu2"
        }
    ],
    "availability": "No subscription required"
}