CVE-2015-1821

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    CVE-2015-1821

    Published: 16 Apr 2015Last Modified: 16 Apr 2026

    Summary:

    Details: 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.

    References: http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html, http://www.debian.org/security/2015/dsa-3222, https://security.gentoo.org/glsa/201507-01, http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html, http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html, http://www.securityfocus.com/bid/73955

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2015-1821 | CVE-DB