CVE-2020-13817

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
mitreCNA
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
CVEADP
---
---
CISA-ADPADP
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 64%
VendorProductVersion
ntpntp
𝑥
< 4.2.8
ntpntp
4.3.0 ≤
𝑥
< 4.3.100
ntpntp
4.2.8
ntpntp
4.2.8:p1
ntpntp
4.2.8:p1-beta1
ntpntp
4.2.8:p1-beta2
ntpntp
4.2.8:p1-beta3
ntpntp
4.2.8:p1-beta4
ntpntp
4.2.8:p1-beta5
ntpntp
4.2.8:p1-rc1
ntpntp
4.2.8:p1-rc2
ntpntp
4.2.8:p10
ntpntp
4.2.8:p11
ntpntp
4.2.8:p12
ntpntp
4.2.8:p13
ntpntp
4.2.8:p2
ntpntp
4.2.8:p2-rc1
ntpntp
4.2.8:p2-rc2
ntpntp
4.2.8:p2-rc3
ntpntp
4.2.8:p3
ntpntp
4.2.8:p3-rc1
ntpntp
4.2.8:p3-rc2
ntpntp
4.2.8:p3-rc3
ntpntp
4.2.8:p4
ntpntp
4.2.8:p5
ntpntp
4.2.8:p6
ntpntp
4.2.8:p7
ntpntp
4.2.8:p8
ntpntp
4.2.8:p9
netappcloud_backup
-
netappclustered_data_ontap
-
netappdata_ontap
-
netappelement_software
-
netapphci_management_node
-
netappontap_tools
-
netappsolidfire
-
netappsteelstore_cloud_integrated_storage
-
netapphci_compute_node_firmware
-
netapph410c_firmware
-
netapph300s_firmware
-
netapph500s_firmware
-
netapph700s_firmware
-
netapph300e_firmware
-
netapph500e_firmware
-
netapph700e_firmware
-
netapph410s_firmware
-
opensuseleap
15.1
opensuseleap
15.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ntp
bullseye
1:4.2.8p15+dfsg-1
fixed
buster
ignored
stretch
ignored
jessie
ignored
ntpsec
bullseye
1.2.0+dfsg1-4
fixed
buster
ignored
stretch
ignored
jessie
ignored
bookworm
1.2.2+dfsg1-1+deb12u1
fixed
bookworm (security)
1.2.2+dfsg1-1+deb12u1
fixed
sid
1.2.3+dfsg1-3
fixed
trixie
1.2.3+dfsg1-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ntp
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
needs-triage
impish
ignored
hirsute
ignored
groovy
ignored
focal
needs-triage
eoan
ignored
bionic
needs-triage
xenial
needs-triage
trusty
needs-triage