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Fencer Intel
high 8.8

CVE-2017-6460 json

Stack-based buffer overflow in the reslist function in ntpq in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote servers have unspe…

published 2017-03-27 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15517

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Stack-based buffer overflow in the reslist function in ntpq in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote servers have unspecified impact via a long flagstr variable in a restriction list response.

Patch / fix

  • ntp Debian 11 1:4.2.8p10+dfsg-1

debian advisories DEBIAN-CVE-2017-6460

  • ntp Ubuntu 16.04 LTS 1:4.2.8p4+dfsg-3ubuntu5.5

ubuntu advisories UBUNTU-CVE-2017-6460

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ntp SLES for SAP 11 SP4, SLES 11 SP4 4.2.8p10-63.1
  • ntp SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +4 more 4.2.8p10-60.1
  • ntp SLES for SAP 12, SLES 12-LTSS 4.2.8p10-46.23.1

suse advisories SUSE-SU-2017:1052-1SUSE-SU-2017:1047-1SUSE-SU-2017:1048-1

  • ntp openSUSE Tumbleweed 4.2.8p15-7.2

opensuse advisories openSUSE-SU-2024:11102-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-6460 updated cvss 7.1

ntp: Buffer Overflow in ntpq when fetching reslist from a malicious ntpd

  • Red Hat Enterprise Linux 5 ntp Red Hat Enterprise Linux 6 ntp, ntpdate, ntp-perl Red Hat Enterprise Linux 7 ntp, sntp, ntpdate, ntp-perl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.68% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.