CVE-2020-11868

CWE-346CWE-400 — Uncontrolled Resource Consumption8 documents7 sources
Severity
7.5HIGH
EPSS
1.3%
top 20.27%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
NTP NTPDebian Debian LinuxNetapp Vasa Provider FOR Clustered Data Ontap+3 more
Timeline
PublishedApr 17
Latest updateMay 24

Description

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶NVDntp/ntp4.3.98 — 4.3.100+2
▶Debianntp< 1:4.2.8p14+dfsg-1
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Debian Linux 8.0, Enterprise Linux 7.0

Patches

Patch: support.ntp.org ↗Patch: www.oracle.com ↗Patch: support.ntp.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-57qq-hwp2-xmcj: ntpd in ntp before 4↗2022-05-24
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CVEList
CVE-2020-11868: ntpd in ntp before 4↗2020-04-17
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OSV
CVE-2020-11868: ntpd in ntp before 4↗2020-04-17
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📋Vendor Advisories

2
Red Hat
ntp: DoS on client ntpd using server mode packet↗2020-03-03
▶
Debian
CVE-2020-11868: ntp - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker...↗2020
▶

💬Community

2
Bugzilla
CVE-2020-11868 ntp: DoS on client ntpd using server mode packet [fedora-all]↗2020-04-16
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Bugzilla
CVE-2020-11868 ntp: DoS on client ntpd using server mode packet↗2019-06-03
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