CVE-2015-7977

medium

Published 2017-01-30 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

5.9

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

5.9

Description

ntpd in NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (NULL pointer dereference) via a ntpdc reslist command.

Predictions

Exploit likelihood

69%

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

OS	Version	Status	Fixed in
sles		affected
debian	bullseye	fixed	`1:4.2.8p7+dfsg-1`
debian	8.0	affected
debian	9.0	affected
fedora	22	affected
fedora	23	affected
ubuntu	12.04	affected
ubuntu	14.04	affected
ubuntu	16.04	affected
freebsd	9.3	affected
freebsd	10.1	affected
freebsd	10.2	affected

Application impact

Vendor	Product	Versions
ntp	ntp	`{"endIncluding":"4.2.8"}`
ntp	ntp	`4.2.8`
netapp	clustered_data_ontap	`-`
netapp	oncommand_balance	`-`

References

CWEs

CWE-476

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

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