CVE-2015-1853 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 (in...
MediumCVSS 6.5
EPSS 1.7%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/chrony(Debian:12) | < 1.30-2 | 1.30-2 |
| debian/chrony(Debian:13) | < 1.30-2 | 1.30-2 |
| debian/chrony(Debian:14) | < 1.30-2 | 1.30-2 |
| tuxfamily chrony | < 1.31.1 | 1.31.1 |
| chrony | = before 1.31.1 | No fix listed |
References
- Debian Security Tracker CVE-2015-1853 vendor-advisory
- chrony.tuxfamily.org release-notes vendor-advisory
- security.gentoo.org third-party-advisory
- bugs.debian.org issue-tracking