ID CVE-2014-8241
Summary XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a similar issue to CVE-2014-6052.
References
Vulnerable Configurations
  • TigerVNC
    cpe:2.3:a:tigervnc:tigervnc
  • RedHat Enterprise Linux Desktop 7.0
    cpe:2.3:o:redhat:enterprise_linux_desktop:7.0
  • RedHat Enterprise Linux HPC Node 7.0
    cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0
  • RedHat Enterprise Linux Server 7.0
    cpe:2.3:o:redhat:enterprise_linux_server:7.0
  • RedHat Enterprise Linux Workstation 7.0
    cpe:2.3:o:redhat:enterprise_linux_workstation:7.0
CVSS
Base: 7.5 (as of 15-12-2016 - 10:49)
Impact:
Exploitability:
CWE CWE-476
CAPEC
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
nessus via4
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20151119_TIGERVNC_ON_SL7_X.NASL
    description An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client. (CVE-2014-8240) A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash. (CVE-2014-8241) The tigervnc packages have been upgraded to upstream version 1.3.1, which provides a number of bug fixes and enhancements over the previous version. This update also fixes the following bug : - The position of the mouse cursor in the VNC session was not correctly communicated to the VNC viewer, resulting in cursor misplacement. The method of displaying the remote cursor has been changed, and cursor movements on the VNC server are now accurately reflected on the VNC client.
    last seen 2018-09-01
    modified 2016-12-21
    plugin id 87576
    published 2015-12-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87576
    title Scientific Linux Security Update : tigervnc on SL7.x x86_64
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-2233.NASL
    description From Red Hat Security Advisory 2015:2233 : Updated tigervnc packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients. The tigervnc packages contain a client which allows users to connect to other desktops running a VNC server. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client. (CVE-2014-8240) A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash. (CVE-2014-8241) The tigervnc packages have been upgraded to upstream version 1.3.1, which provides a number of bug fixes and enhancements over the previous version. (BZ#1199453) This update also fixes the following bug : * The position of the mouse cursor in the VNC session was not correctly communicated to the VNC viewer, resulting in cursor misplacement. The method of displaying the remote cursor has been changed, and cursor movements on the VNC server are now accurately reflected on the VNC client. (BZ#1100661) All tigervnc users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.
    last seen 2018-09-01
    modified 2018-07-24
    plugin id 87093
    published 2015-11-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87093
    title Oracle Linux 7 : tigervnc (ELSA-2015-2233)
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2015-623.NASL
    description An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client. A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash.
    last seen 2018-09-01
    modified 2018-04-18
    plugin id 87349
    published 2015-12-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87349
    title Amazon Linux AMI : tigervnc (ALAS-2015-623)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-2233.NASL
    description Updated tigervnc packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients. The tigervnc packages contain a client which allows users to connect to other desktops running a VNC server. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client. (CVE-2014-8240) A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash. (CVE-2014-8241) The tigervnc packages have been upgraded to upstream version 1.3.1, which provides a number of bug fixes and enhancements over the previous version. (BZ#1199453) This update also fixes the following bug : * The position of the mouse cursor in the VNC session was not correctly communicated to the VNC viewer, resulting in cursor misplacement. The method of displaying the remote cursor has been changed, and cursor movements on the VNC server are now accurately reflected on the VNC client. (BZ#1100661) All tigervnc users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 86976
    published 2015-11-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=86976
    title RHEL 7 : tigervnc (RHSA-2015:2233)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2015-2233.NASL
    description Updated tigervnc packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients. The tigervnc packages contain a client which allows users to connect to other desktops running a VNC server. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client. (CVE-2014-8240) A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash. (CVE-2014-8241) The tigervnc packages have been upgraded to upstream version 1.3.1, which provides a number of bug fixes and enhancements over the previous version. (BZ#1199453) This update also fixes the following bug : * The position of the mouse cursor in the VNC session was not correctly communicated to the VNC viewer, resulting in cursor misplacement. The method of displaying the remote cursor has been changed, and cursor movements on the VNC server are now accurately reflected on the VNC client. (BZ#1100661) All tigervnc users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.
    last seen 2018-11-11
    modified 2018-11-10
    plugin id 87144
    published 2015-12-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87144
    title CentOS 7 : tigervnc (CESA-2015:2233)
redhat via4
advisories
bugzilla
id 1199453
title Re-base to tigervnc-1.3.x
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 tigervnc is earlier than 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233007
      • comment tigervnc is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871006
    • AND
      • comment tigervnc-icons is earlier than 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233013
      • comment tigervnc-icons is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152233014
    • AND
      • comment tigervnc-license is earlier than 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233015
      • comment tigervnc-license is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152233016
    • AND
      • comment tigervnc-server is earlier than 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233005
      • 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 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233017
      • 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 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233009
      • 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 0:1.3.1-3.el7
        oval oval:com.redhat.rhsa:tst:20152233011
      • comment tigervnc-server-module is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110871010
rhsa
id RHSA-2015:2233
released 2015-11-19
severity Moderate
title RHSA-2015:2233: tigervnc security, bug fix, and enhancement update (Moderate)
rpms
  • tigervnc-0:1.3.1-3.el7
  • tigervnc-icons-0:1.3.1-3.el7
  • tigervnc-license-0:1.3.1-3.el7
  • tigervnc-server-0:1.3.1-3.el7
  • tigervnc-server-applet-0:1.3.1-3.el7
  • tigervnc-server-minimal-0:1.3.1-3.el7
  • tigervnc-server-module-0:1.3.1-3.el7
refmap via4
bid 70390
confirm
mlist
  • [oss-security] 20141010 Request for CVE assignment for tigervnc affected by similar flaws as in CVE-2014-6051 and CVE-2014-6052 of libvncserver
  • [oss-security] 20141011 Re: Request for CVE assignment for tigervnc affected by similar flaws as in CVE-2014-6051 and CVE-2014-6052 of libvncserver
Last major update 19-12-2016 - 21:59
Published 14-12-2016 - 17:59
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