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CVE-2015-1853

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Date: December 9, 2019

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.

Language: C

Severity Score

Related Resources (7)

https://security.gentoo.org/glsa/201507-01
https://security-tracker.debian.org/tracker/CVE-2015-1853
https://nvd.nist.gov/vuln/detail/CVE-2015-1853
http://chrony.tuxfamily.org/News.html
https://access.redhat.com/security/cve/CVE-2015-1853
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-1853
https://www.mend.io/vulnerability-database/CVE-2015-1853

Severity Score

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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