Vulnerability · Published Jun 4, 2020 · Assigned by mitre
CVE-2020-13817
High 7.4
In plain English
A high-severity weak randomness in the ntp package (Ubuntu). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.4% (higher than 89% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)3.4%top 11.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | ntp | no fix listed | UBUNTU-CVE-2020-13817 |
Affected products (as reported)
Weakness: CWE-330 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
References
- openSUSE-SU-2020:0934 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1007 vendor-advisory, x_refsource_SUSE
- GLSA-202007-12 vendor-advisory, x_refsource_GENTOO
- https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
- http://support.ntp.org/bin/view/Main/NtpBug3596 x_refsource_MISC
- https://bugs.ntp.org/show_bug.cgi?id=3596 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200625-0004/ x_refsource_CONFIRM