CVE-2020-14396: Null Pointer Dereference
First published: Wed Jun 17 2020(Updated: )
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How 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 | ||
| 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 |
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Reference Links
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553
- https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
- https://usn.ubuntu.com/4434-1/
- https://launchpad.net/bugs/cve/CVE-2020-14396
- https://security-tracker.debian.org/tracker/CVE-2020-14396
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14396
- https://nvd.nist.gov/vuln/detail/CVE-2020-14396
- https://ubuntu.com/security/CVE-2020-14396
Frequently Asked Questions
What is CVE-2020-14396?
CVE-2020-14396 is a vulnerability in LibVNCServer that allows for a NULL pointer dereference.
How severe is CVE-2020-14396?
CVE-2020-14396 is considered high severity with a CVSS score of 7.5.
Which software packages are affected by CVE-2020-14396?
The affected software packages include libvncserver in Debian and Ubuntu, as well as the Libvnc Project Libvncserver.
How can I fix CVE-2020-14396?
To fix CVE-2020-14396, you should update to version 0.9.13 or later of LibVNCServer.
Where can I find more information about CVE-2020-14396?
You can find more information about CVE-2020-14396 on the CVE details page and the LibVNCServer GitHub repository.
- collector/nvd-index
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- version/libvnc project libvncserver/0.9.12
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- version/canonical ubuntu linux/16.04
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- version/canonical ubuntu linux/20.04
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- canonical/siemens simatic itc1500 firmware
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- canonical/siemens simatic itc1900 firmware
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