CVE-2018-8956

low
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
2.5

Description

ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-8956

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-8956.html

OS impact

OSVersionStatusFixed in
arch archfixed4.2.8.p14-1
suse slesaffected
debian debianbookwormfixed0
debian debianforkyfixed0
debian debiansidfixed0
debian debiantrixiefixed0
debian debianbullseyefixed1:4.2.8p14+dfsg-1

References

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