ID CVE-2017-2616
Summary A race condition was found in util-linux before 2.32.1 in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions.
References
Vulnerable Configurations
  • cpe:2.3:a:util-linux_project:util-linux:2.24.2-1:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.24.2-1:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.29:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.29:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.29.1:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.29.1:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.29.2:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.29.2:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.30:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.30:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.30.1:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.30.1:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.30.2:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.30.2:*:*:*:*:*:*:*
  • cpe:2.3:a:util-linux_project:util-linux:2.31:*:*:*:*:*:*:*
    cpe:2.3:a:util-linux_project:util-linux:2.31:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVSS
Base: 4.7 (as of 09-10-2019 - 23:26)
Impact:
Exploitability:
CWE CWE-362
CAPEC
  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE COMPLETE
cvss-vector via4 AV:L/AC:M/Au:N/C:N/I:N/A:C
redhat via4
advisories
  • bugzilla
    id 1418710
    title CVE-2017-2616 util-linux: Sending SIGKILL to other processes with root privileges via su
    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 coreutils is earlier than 0:8.4-46.el6
          oval oval:com.redhat.rhsa:tst:20170654005
        • comment coreutils is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20131652006
      • AND
        • comment coreutils-libs is earlier than 0:8.4-46.el6
          oval oval:com.redhat.rhsa:tst:20170654007
        • comment coreutils-libs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20131652008
    rhsa
    id RHSA-2017:0654
    released 2017-03-21
    severity Moderate
    title RHSA-2017:0654: coreutils security and bug fix update (Moderate)
  • bugzilla
    id 1418710
    title CVE-2017-2616 util-linux: Sending SIGKILL to other processes with root privileges via su
    oval
    AND
    • 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 libblkid is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907007
        • comment libblkid is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111691008
      • AND
        • comment libblkid-devel is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907011
        • comment libblkid-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111691010
      • AND
        • comment libmount is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907009
        • comment libmount is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20162605014
      • AND
        • comment libmount-devel is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907013
        • comment libmount-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20162605020
      • AND
        • comment libuuid is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907005
        • comment libuuid is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111691014
      • AND
        • comment libuuid-devel is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907015
        • comment libuuid-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111691012
      • AND
        • comment util-linux is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907019
        • comment util-linux is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20162605008
      • AND
        • comment uuidd is earlier than 0:2.23.2-33.el7_3.2
          oval oval:com.redhat.rhsa:tst:20170907017
        • comment uuidd is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111691016
    rhsa
    id RHSA-2017:0907
    released 2017-04-12
    severity Moderate
    title RHSA-2017:0907: util-linux security and bug fix update (Moderate)
rpms
  • coreutils-0:8.4-46.el6
  • coreutils-libs-0:8.4-46.el6
  • libblkid-0:2.23.2-33.el7_3.2
  • libblkid-devel-0:2.23.2-33.el7_3.2
  • libmount-0:2.23.2-33.el7_3.2
  • libmount-devel-0:2.23.2-33.el7_3.2
  • libuuid-0:2.23.2-33.el7_3.2
  • libuuid-devel-0:2.23.2-33.el7_3.2
  • util-linux-0:2.23.2-33.el7_3.2
  • uuidd-0:2.23.2-33.el7_3.2
refmap via4
bid 96404
confirm
debian DSA-3793
gentoo GLSA-201706-02
sectrack 1038271
Last major update 09-10-2019 - 23:26
Published 27-07-2018 - 19:29
Back to Top