CVE intelligence and bounded remediation

CVE-2021-43972 — Sysaid Sysaid security vulnerability

Medium CVSS 6.8

An unrestricted file copy vulnerability in /UserSelfServiceSettings.jsp in SysAid ITIL 20.4.74 b10 allows a remote authenticated attacker to copy arbitrary files on the server filesystem to the web root (with an arbitrary filename) via the tempFile and fileName parameters in the HTTP POST body.

Severity
Medium
CVSS
6.8 (2.0)
Published
2022-01-11
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • sysaid / sysaid / 20.4.74

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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