Vulnerability DatabaseCVE-2015-1821
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CVE-2015-1821
Published:April 16, 2015
Updated:May 17, 2026
Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.
Related Resources (8)
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://security.gentoo.org/glsa/201507-01
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-1821
http://www.securityfocus.com/bid/73955
http://www.debian.org/security/2015/dsa-3222
http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
https://security-tracker.debian.org/tracker/CVE-2015-1821
https://access.redhat.com/security/cve/CVE-2015-1821
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CVSS v3
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
CVSS v2
Base Score:
6.5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-119
EPSS
Base Score:
2.60