CVE intelligence and bounded remediation
CVE-2022-39812 — Italtel NetMatch-S CI 5.2.0-20211008 allows Absolute Path Traversal under NMSCI-WebGui/SaveFileUploader
Italtel NetMatch-S CI 5.2.0-20211008 allows Absolute Path Traversal under NMSCI-WebGui/SaveFileUploader. An unauthenticated user can upload files to an arbitrary path. An attacker can change the uploadDir parameter in a POST request (not possible using the GUI) to an arbitrary directory. Because the application does not check in which directory a file will be uploaded, an attacker can perform a variety of attacks that can result in unauthorized access to the server.
- Severity
- High
- CVSS
- 7.5 (3.1)
- Published
- 2023-01-27
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-22
Affected products
- italtel / netmatch-s_ci / 5.2.0-20211008
Matched remediation archetype
Path traversal, unsafe upload, and file handling
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Check exposure
- Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
- Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
- Review canonicalization and containment checks across supported operating systems and storage backends.
Remediate safely
- Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
- Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
- Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.
Authoritative sources
Complete CVE record and remediation plan
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