Denial of Service Issue in LibVNCServer Affects Multiple Versions
CVE-2019-20840

7.5HIGH

Key Information:

Vendor

Libvnc Project

Status
Libvncserver
Vendor
CVE Published:
17 June 2020

What is CVE-2019-20840?

A flaw was identified in LibVNCServer that can trigger a Denial of Service condition. Specifically, the issue arises from unaligned accesses in the ws_decode.c component, which may cause the application to crash. This vulnerability affects all versions of LibVNCServer before 0.9.13, highlighting the necessity for users to upgrade to safeguard against potential service interruptions.

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References

https://github.com/LibVNC/libvncserver/compare/LibVNCServ...
x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/0cf1400c618...
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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