EIP-0e1ca3ec
A vulnerability exists within UltraVNC’s “vncviewer.exe” client. A malicious server can trigger an arbitrary memory write condition through a flaw in the function ClientConnection::SolidColor while drawing pixel data to the screen. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the UltraVNC Viewer process.
Vulnerability Identifiers
Exodus Intelligence: EIP-0e1ca3ec
MITRE CVE: PENDING
Vulnerability Metrics
CVSSv2 Score: 5.8
Vendor References
https://uvnc.com/downloads/ultravnc/146-ultravnc-1-3-6-0.html
Discovery Credit
Exodus Intelligence
Disclosure Timeline
Disclosed to affected vendor: December 8th, 2021
Disclosed to public: December 16th, 2021
Further Information
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The post UltraVNC Viewer VNC client RFB SolidColor Arbitrary Write Vulnerability appeared first on Exodus Intelligence.
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