CVEvulnerability
CVE-2018-8956
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-05-06
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-20
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.
Affected configurations
• ntp ntp 4.2.8
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html lists.opensuse.org
- http://www.ntp.org/ Vendor Advisory
- https://arxiv.org/abs/2005.01783 Third Party Advisory
- https://nikhiltripathi.in/NTP_attack.pdf Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200518-0006/ security.netapp.com
- https://tools.ietf.org/html/rfc5905 Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html lists.opensuse.org
- http://www.ntp.org/ Vendor Advisory
- https://arxiv.org/abs/2005.01783 Third Party Advisory
- https://nikhiltripathi.in/NTP_attack.pdf Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200518-0006/ security.netapp.com
- https://tools.ietf.org/html/rfc5905 Third Party Advisory