ID CVE-2015-7978
Summary NTP before 4.2.8p6 and 4.3.0 before 4.3.90 allows a remote attackers to cause a denial of service (stack exhaustion) via an ntpdc relist command, which triggers recursive traversal of the restriction list.
References
Vulnerable Configurations
  • cpe:2.3:a:ntp:ntp:4.2.4:p5:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.2.4:p5:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.2.6:p5:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.2.6:p5:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.2.7:p5:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.2.7:p5:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.71:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.71:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.72:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.72:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.73:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.73:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.80:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.80:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:*
  • cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:*
    cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 18-05-2018 - 01:29)
Impact:
Exploitability:
CWE CWE-400
CAPEC
  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Inducing Account Lockout
    An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
  • Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS))
    XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:N/I:N/A:P
redhat via4
advisories
  • bugzilla
    id 1300270
    title CVE-2015-7978 ntp: stack exhaustion in recursive traversal of restriction list
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 6 Client is installed
        oval oval:com.redhat.rhba:tst:20111656001
      • comment Red Hat Enterprise Linux 6 Server is installed
        oval oval:com.redhat.rhba:tst:20111656002
      • comment Red Hat Enterprise Linux 6 Workstation is installed
        oval oval:com.redhat.rhba:tst:20111656003
      • comment Red Hat Enterprise Linux 6 ComputeNode is installed
        oval oval:com.redhat.rhba:tst:20111656004
    • OR
      • AND
        • comment ntp is earlier than 0:4.2.6p5-10.el6
          oval oval:com.redhat.rhsa:tst:20160780005
        • comment ntp is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20142024006
      • AND
        • comment ntp-doc is earlier than 0:4.2.6p5-10.el6
          oval oval:com.redhat.rhsa:tst:20160780011
        • comment ntp-doc is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20142024010
      • AND
        • comment ntp-perl is earlier than 0:4.2.6p5-10.el6
          oval oval:com.redhat.rhsa:tst:20160780007
        • comment ntp-perl is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20142024014
      • AND
        • comment ntpdate is earlier than 0:4.2.6p5-10.el6
          oval oval:com.redhat.rhsa:tst:20160780009
        • comment ntpdate is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20142024012
    rhsa
    id RHSA-2016:0780
    released 2016-05-10
    severity Moderate
    title RHSA-2016:0780: ntp security and bug fix update (Moderate)
  • rhsa
    id RHSA-2016:2583
rpms
  • ntp-0:4.2.6p5-10.el6
  • ntp-doc-0:4.2.6p5-10.el6
  • ntp-perl-0:4.2.6p5-10.el6
  • ntpdate-0:4.2.6p5-10.el6
  • ntp-0:4.2.6p5-25.el7
  • ntp-doc-0:4.2.6p5-25.el7
  • ntp-perl-0:4.2.6p5-25.el7
  • ntpdate-0:4.2.6p5-25.el7
  • sntp-0:4.2.6p5-25.el7
refmap via4
bid 81962
cert-vn VU#718152
cisco 20160120 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products - January 2016
confirm
debian DSA-3629
fedora
  • FEDORA-2016-34bc10a2c8
  • FEDORA-2016-8bb1932088
freebsd FreeBSD-SA-16:09
gentoo GLSA-201607-15
sectrack 1034782
suse
  • SUSE-SU-2016:1175
  • SUSE-SU-2016:1177
  • SUSE-SU-2016:1247
  • SUSE-SU-2016:1311
  • SUSE-SU-2016:1912
  • SUSE-SU-2016:2094
  • openSUSE-SU-2016:1292
  • openSUSE-SU-2016:1423
ubuntu USN-3096-1
Last major update 18-05-2018 - 01:29
Published 30-01-2017 - 21:59
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