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KLCERT-20-016: Denial-of-Service in ARC Informatique PcVue

Kaspersky Lab publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky Lab does not make any guarantees in respect of information received from vendors of products in which vulnerabilities have been identified, which is included in the following sections of the advisory: Affected Products, Vendor Mitigation.

KL-IDS KLCERT-20-016
CVE-IDS CVE-2020-26868
Publication date 2020.10.09
Researcher Sergey Temnikov, Kaspersky ICS CERT
Andrey Muravitsky, Kaspersky ICS CERT
Description A Denial Of Service vulnerability exists in PcVue from version 8.10 onward, due to the ability for a non-authorized user to modify information used to validate messages sent by legitimate web clients.
Impact Prevent legitimate users to connect and operate properly if using WebVue, the WebScheduler or the TouchVue mobile app.
Severity
CVSS v3 Base Score: 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability Remotely
Difficulty Low
User interaction None
Existence of exploit PoC
Affected products
Affected products ARC Informatique PcVue 8.10 (including) through 12.0.17 (excluding)
Mitigation
Vendor mitigation Vendor provided detailed information for mitigation in the security bulletin SB2020-1 (login required). Download this document and follow the step by step instructions: https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1
The user must be logged in to access the security notification.
Vendor’s security alert list: https://www.pcvuesolutions.com/security
Timeline October 2020 – Advisory published