ID CVE-2015-3248
Summary openhpi/ in OpenHPI before 3.6.0 uses world-writable permissions for /var/lib/openhpi directory, which allows local users, when quotas are not properly setup, to fill the filesystem hosting /var/lib and cause a denial of service (disk consumption).
Vulnerable Configurations
  • cpe:2.3:a:openhpi:openhpi:3.5.0:*:*:*:*:*:*:*
Base: 4.7 (as of 10-10-2017 - 14:55)
  • 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.
cvss-vector via4 AV:L/AC:M/Au:N/C:N/I:N/A:C
redhat via4
id 1233520
title CVE-2015-3248 openhpi: world writable /var/lib/openhpi directory
  • OR
    • comment Red Hat Enterprise Linux 7 Client is installed
      oval oval:com.redhat.rhba:tst:20150364001
    • comment Red Hat Enterprise Linux 7 Server is installed
      oval oval:com.redhat.rhba:tst:20150364002
    • comment Red Hat Enterprise Linux 7 Workstation is installed
      oval oval:com.redhat.rhba:tst:20150364003
    • comment Red Hat Enterprise Linux 7 ComputeNode is installed
      oval oval:com.redhat.rhba:tst:20150364004
  • OR
    • AND
      • comment openhpi is earlier than 0:3.4.0-2.el7
        oval oval:com.redhat.rhsa:tst:20152369005
      • comment openhpi is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152369006
    • AND
      • comment openhpi-devel is earlier than 0:3.4.0-2.el7
        oval oval:com.redhat.rhsa:tst:20152369009
      • comment openhpi-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152369010
    • AND
      • comment openhpi-libs is earlier than 0:3.4.0-2.el7
        oval oval:com.redhat.rhsa:tst:20152369007
      • comment openhpi-libs is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152369008
id RHSA-2015:2369
released 2015-11-19
severity Low
title RHSA-2015:2369: openhpi security, bug fix, and enhancement update (Low)
  • openhpi-0:3.4.0-2.el7
  • openhpi-devel-0:3.4.0-2.el7
  • openhpi-libs-0:3.4.0-2.el7
refmap via4
fedora FEDORA-2015-10944
Last major update 10-10-2017 - 14:55
Published 26-09-2017 - 15:29
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