CVE-2014-6053
5.0 · MEDIUMThe rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows…
Overview
CVE-2014-6053 is a medium-severity vulnerability affecting libvncserver libvncserver. It was published on December 15, 2014 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical description
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.
Remediation
Check the references section for vendor advisories and patches from libvncserver. Update libvncserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libvncserver | libvncserver | 0 | Affected |
References
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Frequently asked questions
What is CVE-2014-6053?
CVE-2014-6053 is a medium-severity vulnerability affecting libvncserver libvncserver. It was published on December 15, 2014 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
How severe is CVE-2014-6053?
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2014-6053?
Check the references section for vendor advisories and patches from libvncserver. Update libvncserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2014-6053?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-6053 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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