title: ARC Informatique PcVue Deserialization of Untrusted Data
description: ARC Informatique PcVue prior to version 12.0.17 is vulnerable due to the deserialization of untrusted data, which may allow an attacker to remotely execute arbitrary code on the web and mobile back-end server.
problem types: CWE-502: Deserialization of Untrusted Data
affected:
{
product: PcVue
vendor: ARC Informatique
versions:
lessThanOrEqual: 12.0.17, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
solutions: ARC Informatique recommends upgrading PcVue to v12.0.17. Contact PcVue Support to receive instructions on downloading and installing the latest software version.
workarounds: 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 <PcVue installation directory>\Bin\PropertyServer.config>, change the following element and set it to “Low” (defaults to “Full”):
<serverProviders>
<formatter ref=”binary” typeFilterLevel=”Low” />
</serverProviders>
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.