VDB
CVE-2018-8956
CVE-2018-8956
PUBLISHED
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.
EPSS 1.95% · 83.8th percentile
Risk Scores
EPSS Score
1.95%
83.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | ntp | 0, *, * |
| Ubuntu:Pro:20.04:LTS | ntp | *, 0, 1:4.2.8p12+dfsg-3ubuntu2 |
| Ubuntu:22.04:LTS | ntp | *, 1:4.2.8p12+dfsg-3ubuntu6, 1:4.2.8p15+dfsg-1ubuntu2 |
| Ubuntu:Pro:14.04:LTS | ntp | *, *, * |
| Ubuntu:Pro:18.04:LTS | ntp | 1:4.2.8p10+dfsg-5ubuntu7.2+esm1, 1:4.2.8p10+dfsg-5ubuntu7.3+esm1, 1:4.2.8p10+dfsg-5ubuntu7 |
Timeline
- May 6, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-8956 third-party-advisory
- http://www.ntp.org/ third-party-advisory
- https://arxiv.org/abs/2005.01783 third-party-advisory
- https://nikhiltripathi.in/NTP_attack.pdf third-party-advisory
- https://tools.ietf.org/html/rfc5905 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-8956 third-party-advisory