Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2015-1853

Published: Dec 09, 2019 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
4.3 MODERATE
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2015-1853
CWEhttps://cwe.mitre.org/data/definitions/NVD-Other.html

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 Software

NameVendorStart VersionEnd Version
ChronyTuxfamily*1.31.1 (excluding)
Red Hat Enterprise Linux 7RedHatchrony-0:2.1.1-1.el7*
ChronyUbuntuesm-infra-legacy/trusty*
ChronyUbuntulucid*
ChronyUbuntuprecise*
ChronyUbuntutrusty*
ChronyUbuntutrusty/esm*
ChronyUbuntuupstream*
ChronyUbuntuutopic*
ChronyUbuntuvivid*
ChronyUbuntuwily*
ChronyUbuntuyakkety*
ChronyUbuntuzesty*

References

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