CVE-2018-8956
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.
Does this matter?
Lower severity and a low EPSS score (3.07%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 3.07% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ntp/ntp
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html
- http://www.ntp.org/Vendor Advisory
- https://arxiv.org/abs/2005.01783Third Party Advisory
- https://nikhiltripathi.in/NTP_attack.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200518-0006/
- https://tools.ietf.org/html/rfc5905Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html
- http://www.ntp.org/Vendor Advisory
- https://arxiv.org/abs/2005.01783Third Party Advisory
- https://nikhiltripathi.in/NTP_attack.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200518-0006/
- https://tools.ietf.org/html/rfc5905Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.