National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-8266 Detail

Current Description

UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer function in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. User interaction is required to trigger these vulnerabilities. These vulnerabilities have been fixed in revision 1208.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 9.8 CRITICAL
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-013-ultravnc-access-of-memory-location-after-end-of-buffer/ Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read NIST  
CWE-787 Out-of-bounds Write NIST  
CWE-788 Access of Memory Location After End of Buffer Kaspersky Labs  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
1.2.2.3


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-8266
NVD Published Date:
03/08/2019
NVD Last Modified:
10/09/2019