high
7.5
CWE
476
Advisory Published
Updated

CVE-2020-14397: Null Pointer Dereference

First published: Wed Jun 17 2020(Updated: )

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Libvnc Project Libvncserver<=0.9.12
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Canonical Ubuntu Linux=20.04
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Siemens Simatic Itc1500 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1500
Siemens Simatic Itc1500 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1500 Pro
Siemens Simatic Itc1900 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1900
Siemens Simatic Itc1900 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1900 Pro
Siemens Simatic Itc2200 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc2200
Siemens Simatic Itc2200 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc2200 Pro
openSUSE Leap=15.2
redhat/libvncserver<0.9.13
0.9.13
All of
Siemens Simatic Itc1500 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1500
All of
Siemens Simatic Itc1500 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1500 Pro
All of
Siemens Simatic Itc1900 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1900
All of
Siemens Simatic Itc1900 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc1900 Pro
All of
Siemens Simatic Itc2200 Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc2200
All of
Siemens Simatic Itc2200 Pro Firmware>=3.0.0.0<3.2.1.0
Siemens Simatic Itc2200 Pro
debian/libvncserver
0.9.13+dfsg-2+deb11u1
0.9.14+dfsg-1

Remedy

https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

Remedy

https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID of this issue?

    The vulnerability ID of this issue is CVE-2020-14397.

  • What is the severity of CVE-2020-14397?

    The severity of CVE-2020-14397 is high with a CVSS score of 7.5.

  • What is the affected software of CVE-2020-14397?

    The affected software of CVE-2020-14397 includes libvncserver versions 0.9.11 to 0.9.13.

  • How can I fix CVE-2020-14397?

    To fix CVE0-2020-14397, update libvncserver to version 0.9.14 or apply the appropriate remedy version provided by your Linux distribution.

  • Where can I find more information about CVE-2020-14397?

    You can find more information about CVE-2020-14397 in the provided references: [link1](https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0), [link2](https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13), [link3](https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html).

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