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.

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

.