Home / CVE DB / CVE-2015-3405
Standard
Vulnerability Identifier

CVE-2015-3405

2017-08-09
Severity Assessment
LOW
CVSS v3.x Score
Clinical Analysis (Description)

ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

Vector Sequencing

Attack Parameters

Impact Consequences

Technical Impact

CVSS v2 Score (Legacy)
5.0

For backward compatibility

EPSS Probability
16.56%

Percentile: 94.9%

Weakness Classification

CWE-CWE-331

Affected Population

Affected Configurations

Total: 26 detected entries

Software List Scrollable
re
enterprise_linux_for_scientific_computing
Vendor: redhat • v6.0
nt
ntp
Vendor: ntp • v4.3.6
nt
ntp
Vendor: ntp • v4.2.8
fe
fedora
Vendor: fedoraproject • v21
re
enterprise_linux_server_from_rhui_6
Vendor: redhat • v6.0
de
debian_linux
Vendor: debian • v8.0
de
debian_linux
Vendor: debian • v7.0
nt
ntp
Vendor: ntp • v4.3.7
nt
ntp
Vendor: ntp • v4.3.4
re
enterprise_linux_server
Vendor: redhat • v6.0
nt
ntp
Vendor: ntp • v4.3.8
nt
ntp
Vendor: ntp • v4.3.3
nt
ntp
Vendor: ntp • v4.3.0
nt
ntp
Vendor: ntp • v4.3.2
nt
ntp
Vendor: ntp • v4.3.10
re
enterprise_linux_for_ibm_z_systems
Vendor: redhat • v6.0
nt
ntp
Vendor: ntp • v4.3.1
nt
ntp
Vendor: ntp • v4.3.9
nt
ntp
Vendor: ntp • v4.3.5
nt
ntp
Vendor: ntp • v4.3.11
op
suse_linux_enterprise_server
Vendor: opensuse • v11.0
op
suse_linux_enterprise_desktop
Vendor: opensuse_project • v11.0
su
suse_linux_enterprise_server
Vendor: suse • v11.0
re
enterprise_linux_desktop
Vendor: redhat • v6.0
re
enterprise_linux_for_power_big_endian
Vendor: redhat • v6.0
re
enterprise_linux_workstation
Vendor: redhat • v6.0
Timeline

Time Line

PUBLICATION
09 Aug 2017
MODIFICATION
20 Apr 2025
Impact Statistics

Key Metrics

CVSS Score
LOW
Products
26
Affected
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
No direct patch listed in database.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.