PT-2019-4933 · Ultravnc · Ultravnc

Published 2019-03-05 · Updated 2020-06-10 · CVE-2018-15361

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions UltraVNC versions prior to revision 1199

Description The issue is related to a buffer underflow vulnerability in the VNC client code of UltraVNC, which can potentially result in code execution. This can be exploited by a remote attacker via network connectivity.

Recommendations For versions prior to revision 1199, update to revision 1199 or later to resolve the issue. As a temporary workaround, consider restricting network connectivity to minimize the risk of exploitation.

Fix

Memory Corruption

Weakness Enumeration

CWE-124

CWE-787

Related Identifiers

BDU:2020-01541

CVE-2018-15361

Affected Products

Ultravnc

References · 9

• https://bdu.fstec.ru/vul/2020-01541 · Security Note
• https://osv.dev/vulnerability/CVE-2018-15361 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-15361 · Security Note
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-003-ultravnc-buffer-underwrite · Note
• https://t.me/cybersecuritytechnologies/462 · Telegram Post
• 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://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