PT-2019-5275 · Ultravnc · Ultravnc

Published 2019-03-01 · Updated 2020-10-22 · CVE-2019-8272

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions UltraVNC versions prior to revision 1212

Description The issue is related to incorrect calculations in the UltraVNC component, which is part of the TelevisGo block for monitoring, control, and remote maintenance of commercial cold production installations. This can allow a remote attacker to execute arbitrary code. The vulnerability is exploitable via network connectivity.

Recommendations For versions prior to revision 1212, update to revision 1212 or later to resolve the issue. As a temporary workaround, consider restricting network connectivity to the VNC server until the update is applied.

Fix

Weakness Enumeration

CWE-193

CWE-682

Related Identifiers

BDU:2020-02172

CVE-2019-8272

Affected Products

Ultravnc

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2019-8272 · Security Note
• https://osv.dev/vulnerability/CVE-2019-8272 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02172 · Security Note
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-019-ultravnc-off-by-one-error · Note
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2019-225-05-TelevisGO_Security_Notification.pdf&p_Doc_Ref=SEVD-2019-225-05 · Note
• https://us-cert.gov/ics/advisories/icsa-20-161-06 · Note
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2019-225-05-TelevisGO_Security_Notification.pdf&p_Doc_Ref=SEVD-2019-225-05 · Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf · Note