CVE-2020-26868

ARC Informatique PcVue Access to Critical Private Variable via Public Method

Description

ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a denial-of-service attack due to the ability of an unauthorized user to modify information used to validate messages sent by legitimate web clients. This issue also affects third-party systems based on the Web Services Toolkit.

Remediation

Solution:

  • ARC Informatique recommends upgrading PcVue to v12.0.17. Contact PcVue Support to receive instructions on downloading and installing the latest software version.

Workaround:

  • The following mitigations and workarounds have been identified by ARC Informatique to help reduce risk: Uninstall the web and mobile backend. Users not using the affected components should uninstall them. If the components are not required, do not install them. Change default configuration if using components prior to v12.0. If taking advantage of the web and mobile back features with a product version up to v11.2, change the following configuration item manually to prevent remote code execution In the file \Bin\PropertyServer.config>, change the following element and set it to “Low” (defaults to “Full”): This workaround cannot be applied to PcVue v12.0 Harden firewall configuration by ensuring that incoming connections on the corresponding port are authorized only if initiated by the IIS Web Server process. The listening port is configurable (default 8090) and may have been changed on the system using the Application Explorer.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory pcvuesolutions.com Vendor Advisory pcvuesolutions.com
Affected: ARC Informatique PcVue
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-20-308-03 third party advisory us government resource
https://www.pcvuesolutions.com/security vendor advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/10/09/klcert-20-016-denial-of-service-in-arc-informatique-pcvue/ broken link
https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1 permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-26868?
CVE-2020-26868 has been scored as a high severity vulnerability.
How to fix CVE-2020-26868?
To fix CVE-2020-26868: ARC Informatique recommends upgrading PcVue to v12.0.17. Contact PcVue Support to receive instructions on downloading and installing the latest software version.
Is CVE-2020-26868 being actively exploited in the wild?
It is possible that CVE-2020-26868 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-26868?
CVE-2020-26868 affects ARC Informatique PcVue.
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