ID CVE-2017-7396
Summary In TigerVNC 1.7.1 (CConnection.cxx CConnection::CConnection), an unauthenticated client can cause a small memory leak in the server.
References
Vulnerable Configurations
  • cpe:2.3:a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 03-10-2019 - 00:03)
Impact:
Exploitability:
CWE CWE-772
CAPEC
  • HTTP DoS
    An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.
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 1438703
title CVE-2017-7396 tigervnc: SecurityServer and ClientServer memory leaks
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 fltk is earlier than 0:1.3.4-1.el7
        oval oval:com.redhat.rhsa:tst:20172000009
      • comment fltk is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20172000010
    • AND
      • comment fltk-devel is earlier than 0:1.3.4-1.el7
        oval oval:com.redhat.rhsa:tst:20172000005
      • comment fltk-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20172000006
    • AND
      • comment fltk-fluid is earlier than 0:1.3.4-1.el7
        oval oval:com.redhat.rhsa:tst:20172000007
      • comment fltk-fluid is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20172000008
    • AND
      • comment fltk-static is earlier than 0:1.3.4-1.el7
        oval oval:com.redhat.rhsa:tst:20172000011
      • comment fltk-static is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20172000012
    • AND
      • comment tigervnc is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000015
      • comment tigervnc is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871006
    • AND
      • comment tigervnc-icons is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000023
      • comment tigervnc-icons is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152233014
    • AND
      • comment tigervnc-license is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000021
      • comment tigervnc-license is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152233016
    • AND
      • comment tigervnc-server is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000013
      • comment tigervnc-server is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871012
    • AND
      • comment tigervnc-server-applet is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000025
      • comment tigervnc-server-applet is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871008
    • AND
      • comment tigervnc-server-minimal is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000017
      • comment tigervnc-server-minimal is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152233010
    • AND
      • comment tigervnc-server-module is earlier than 0:1.8.0-1.el7
        oval oval:com.redhat.rhsa:tst:20172000019
      • comment tigervnc-server-module is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871010
rhsa
id RHSA-2017:2000
released 2017-08-01
severity Moderate
title RHSA-2017:2000: tigervnc and fltk security, bug fix, and enhancement update (Moderate)
rpms
  • fltk-0:1.3.4-1.el7
  • fltk-devel-0:1.3.4-1.el7
  • fltk-fluid-0:1.3.4-1.el7
  • fltk-static-0:1.3.4-1.el7
  • tigervnc-0:1.8.0-1.el7
  • tigervnc-icons-0:1.8.0-1.el7
  • tigervnc-license-0:1.8.0-1.el7
  • tigervnc-server-0:1.8.0-1.el7
  • tigervnc-server-applet-0:1.8.0-1.el7
  • tigervnc-server-minimal-0:1.8.0-1.el7
  • tigervnc-server-module-0:1.8.0-1.el7
refmap via4
bid 97305
confirm
gentoo GLSA-201801-13
Last major update 03-10-2019 - 00:03
Published 01-04-2017 - 02:59
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