CVE-2015-1853
6.5
MEDIUM
CVSS 3.1
EPSS 0.87%
Description
chrony before 1.31.1 does not properly protect state variables in authenticated symmetric NTP associations, which allows remote attackers with knowledge of NTP peering to cause a denial of service (inability to synchronize) via random timestamps in crafted NTP data packets.
How to fix CVE-2015-1853
To remediate CVE-2015-1853, upgrade the affected package to a fixed version below.
- Debian/chrony—upgrade to 1.30-2 or later
Is CVE-2015-1853 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.30-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |