CVE-2016-1549: ntp project ntp Data Processing Errors
CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2016-1549DEBIAN-CVE-2016-1549
Published 06-01-2017Last modified 05-08-2024
Vulnerability summary
CVE-2016-1549 is a medium (CVSS 6.5) Data Processing Errors vulnerability in ntp project ntp. EPSS estimates a 3.12% chance of exploitation in the next 30 days, higher than 87.6% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.0 (NVD)EPSS score
3.12%
0%100%
Low · -0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 10Timeline
- 06-01-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
3.12%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
-0.03 pp
From 3.15% on 19-09-2026
19-09-202619-10-2026
EPSS score3.12%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- ntp< 1:4.2.8p7+dfsg-1
Ntp1 product
- ntp4.2.8:p4
Ntp project1 product
- ntp4.2.8p3 | 4.2.8p4
Ntpsec project1 product
- ntpsec3e160db8dc248a0bcb053b56a80167dc742d2b74 | a5fb34b9cc89b92a8fef2f459004865c93bb7f92
Ubuntu1 product
- ntpAll versions (No fix recorded)
5 vendors · 5 products
References
14 links- www.talosintelligence.com/reports/TALOS-2016-0083/X Refsource MISCMitigationTechnical DescriptionThird Party Advisory
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRM
- security.netapp.com/advisory/ntap-20171004-0002/X Refsource CONFIRM
- www.synology.com/support/security/Synology_SA_18_13X Refsource CONFIRM
