Heap Buffer Overflow in LibVNCServer Affects Remote Desktop Solutions
CVE-2019-15690

8.8HIGH

Key Information:

Vendor
Libvnc
Status
Libvncserver
Vendor
CVE Published:
24 January 2025

Summary

LibVNCServer, up to version 0.9.12, contains a heap buffer overflow vulnerability in the HandleCursorShape() function located in libvncclient/cursor.c. This issue occurs when an attacker sends maliciously crafted cursor shape dimensions, which could enable the execution of arbitrary code on the affected system, leading to potential compromises of security and data integrity.

Affected Version(s)

LibVNCServer * <= 0.9.12

References

https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-...
third-party-advisory

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pavel Cheremushkin from Kaspersky
.