VIR Vulnerability Intelligence Relay

CVE-2017-6451

high
Published 2017-03-27 · Modified 2026-05-13
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
7.8
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.8

Description

The mx4200_send function in the legacy MX4200 refclock in NTP before 4.2.8p10 and 4.3.x before 4.3.94 does not properly handle the return value of the snprintf function, which allows local users to execute arbitrary code via unspecified vectors, which trigger an out-of-bounds memory write.

Predictions

Exploit likelihood
75%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
debian debianbullseyefixed0

Application impact
VendorProductVersionsFixed
ntpntp4.2.8
ntpntp4.3.0
ntpntp4.3.1
ntpntp4.3.2
ntpntp4.3.3
ntpntp4.3.4
ntpntp4.3.5
ntpntp4.3.6
ntpntp4.3.7
ntpntp4.3.8
ntpntp4.3.9
ntpntp4.3.10
ntpntp4.3.11
ntpntp4.3.12
ntpntp4.3.13
ntpntp4.3.14
ntpntp4.3.15
ntpntp4.3.16
ntpntp4.3.17
ntpntp4.3.18
ntpntp4.3.19
ntpntp4.3.20
ntpntp4.3.21
ntpntp4.3.22
ntpntp4.3.23
ntpntp4.3.24
ntpntp4.3.25
ntpntp4.3.26
ntpntp4.3.27
ntpntp4.3.28
ntpntp4.3.29
ntpntp4.3.30
ntpntp4.3.31
ntpntp4.3.32
ntpntp4.3.33
ntpntp4.3.34
ntpntp4.3.35
ntpntp4.3.36
ntpntp4.3.37
ntpntp4.3.38
ntpntp4.3.39
ntpntp4.3.40
ntpntp4.3.41
ntpntp4.3.42
ntpntp4.3.43
ntpntp4.3.44
ntpntp4.3.45
ntpntp4.3.46
ntpntp4.3.47
ntpntp4.3.48
ntpntp4.3.49
ntpntp4.3.50
ntpntp4.3.51
ntpntp4.3.52
ntpntp4.3.53
ntpntp4.3.54
ntpntp4.3.55
ntpntp4.3.56
ntpntp4.3.57
ntpntp4.3.58
ntpntp4.3.59
ntpntp4.3.60
ntpntp4.3.61
ntpntp4.3.62
ntpntp4.3.63
ntpntp4.3.64
ntpntp4.3.65
ntpntp4.3.66
ntpntp4.3.67
ntpntp4.3.68
ntpntp4.3.69
ntpntp4.3.70
ntpntp4.3.71
ntpntp4.3.72
ntpntp4.3.73
ntpntp4.3.74
ntpntp4.3.75
ntpntp4.3.76
ntpntp4.3.77
ntpntp4.3.78
ntpntp4.3.79
ntpntp4.3.80
ntpntp4.3.81
ntpntp4.3.82
ntpntp4.3.83
ntpntp4.3.84
ntpntp4.3.85
ntpntp4.3.86
ntpntp4.3.87
ntpntp4.3.88
ntpntp4.3.89
ntpntp4.3.90
ntpntp4.3.91
ntpntp4.3.92
ntpntp4.3.93

References

CWEs

CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.