IM
IronMonkey Threat Research

CVE-2019-8261 CRITICAL

Published: 2019-03-05 | Last Modified: 2026-06-17 | Status: Modified

Description

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.

Additional Descriptions (1)

UltraVNC, en su revisión 1199, contiene una vulnerabilidad de lectura fuera de límites en el código VNC dentro del decodificador del cliente CoRRE, provocado por el desbordamiento de multiplicaciones. Este ataque parece ser explotable mediante la conectividad de red. Esto se ha solucionado en la revisión 1200.

CVSS Metrics

Base Score: 7.5 (HIGH)

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access VectorNETWORK
Access ComplexityLOW
AuthenticationNONE
Confidentiality ImpactPARTIAL
Integrity ImpactPARTIAL
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 10.0

Impact Score: 6.4

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-125
[email protected] Primary
en CWE-125

Affected Products

Vendor Product Version Update Type
uvnc ultravnc * <built-in method update of dict object at 0x7e6107468700> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Notification
Message here