ID CVE-2015-1827
Summary The get_user_grouplist function in the extdom plug-in in FreeIPA before 4.1.4 does not properly reallocate memory when processing user accounts, which allows remote attackers to cause a denial of service (crash) via a group list request for a user that belongs to a large number of groups.
References
Vulnerable Configurations
  • FreeIPA 4.1.3
    cpe:2.3:a:freeipa:freeipa:4.1.3
  • Fedora 22
    cpe:2.3:o:fedoraproject:fedora:22
  • Fedora 21
    cpe:2.3:o:fedoraproject:fedora:21
CVSS
Base: 5.0 (as of 01-06-2016 - 16:10)
Impact:
Exploitability:
CWE CWE-19
CAPEC
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • XML Nested Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By nesting XML data and causing this data to be continuously self-referential, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization. An attacker's goal is to leverage parser failure to his or her advantage. In most cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it may be possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.230.1].
  • XML Oversized Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By supplying oversized payloads in input vectors that will be processed by the XML parser, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization, and potentially cause execution of arbitrary code. An attacker's goal is to leverage parser failure to his or her advantage. In many cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it is possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.231.1].
  • XML Client-Side Attack
    Client applications such as web browsers that process HTML data often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.484.1]
  • XML Parser Attack
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.99.1]
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
redhat via4
advisories
bugzilla
id 1205200
title CVE-2015-1827 ipa: memory corruption when using get_user_grouplist()
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 7 Client is installed
      oval oval:com.redhat.rhsa:tst:20140675001
    • comment Red Hat Enterprise Linux 7 Server is installed
      oval oval:com.redhat.rhsa:tst:20140675002
    • comment Red Hat Enterprise Linux 7 Workstation is installed
      oval oval:com.redhat.rhsa:tst:20140675003
    • comment Red Hat Enterprise Linux 7 ComputeNode is installed
      oval oval:com.redhat.rhsa:tst:20140675004
  • OR
    • AND
      • comment slapi-nis is earlier than 0:0.54-3.el7_1
        oval oval:com.redhat.rhsa:tst:20150728005
      • comment slapi-nis is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20150728006
    • AND
      • comment ipa is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728007
      • comment ipa is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111533006
    • AND
      • comment ipa-admintools is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728011
      • comment ipa-admintools is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111533008
    • AND
      • comment ipa-client is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728013
      • comment ipa-client is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111533012
    • AND
      • comment ipa-python is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728009
      • comment ipa-python is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111533010
    • AND
      • comment ipa-server is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728015
      • comment ipa-server is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111533014
    • AND
      • comment ipa-server-trust-ad is earlier than 0:4.1.0-18.el7_1.3
        oval oval:com.redhat.rhsa:tst:20150728017
      • comment ipa-server-trust-ad is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20130528018
rhsa
id RHSA-2015:0728
released 2015-03-26
severity Moderate
title RHSA-2015:0728: ipa and slapi-nis security and bug fix update (Moderate)
rpms
  • slapi-nis-0:0.54-3.el7_1
  • ipa-0:4.1.0-18.el7_1.3
  • ipa-admintools-0:4.1.0-18.el7_1.3
  • ipa-client-0:4.1.0-18.el7_1.3
  • ipa-python-0:4.1.0-18.el7_1.3
  • ipa-server-0:4.1.0-18.el7_1.3
  • ipa-server-trust-ad-0:4.1.0-18.el7_1.3
refmap via4
bid 73376
confirm
fedora
  • FEDORA-2015-4747
  • FEDORA-2015-4788
Last major update 30-12-2016 - 21:59
Published 30-03-2015 - 10:59
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