Summary
PASvisu is an HMI solution for Machine Visualization. It is available as a standalone software product, but it is also included in various models of the PMI product family. The PASvisu Server component contains multiple vulnerabilities which can be utilised to write arbitrary files, potentially leading to code execution.
Details
Impact
The PASvisu Server provides an integrated web server which is also used to send the configuration from the PASvisu Builder to the server component. When receiving and processing a configuration, it does not properly check pathnames. If the PASvisu Server is not properly protected by setting an administration password, the listed vulnerabilities can be exploited by an attacker to write arbitrary files. In the worst case scenario this could lead to remote code execution.
Remediation
PASvisu software, PMI v7xx, PMI v8xx: Configure an administration password.
PASvisu, PMI v7xx, PMI v8xx: Install the fixed version as soon as it is available. Please visit the Pilz Shop (www.pilz.com/enINT/eshop) to check for a fixed version.
Vulnerabilities 2
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Critical 9.8
Arbitrary File Write
This affects the package cesanta/mongoose before 7.6. The unsafe handling of file names during upload using mg_http_upload() method may enable attackers to write files to arbitrary locations outside the designated target folder.
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High 7.5
PILZ: PASvisu and PMI affected by ZipSlip
A path traversal vulnerability was discovered in Pilz PASvisu Server before 1.12.0. An unauthenticated remote attacker could use a zipped, malicious configuration file to trigger arbitrary file writes ('zip-slip'). File writes do not affect confidentiality or…
Revision history
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#1
Initial revision.
References
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VDE-2022-033: Pilz: PASvisu and PMI affected by multiple vulnerabilities - HTML
https://certvde.com/en/advisories/VDE-2022-033/
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Vendor PSIRT
https://www.pilz.com
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CERT@VDE Security Advisories for Pilz GmbH & Co. KG
https://certvde.com/en/advisories/vendor/pilz/