CVE intelligence and bounded remediation

CVE-2020-15623 — This vulnerability allows remote attackers to write arbitrary files on affected installations of CentOS Web Panel cwp-e17.0.9.8.923

Critical CVSS 9.8

This vulnerability allows remote attackers to write arbitrary files on affected installations of CentOS Web Panel cwp-e17.0.9.8.923. Authentication is not required to exploit this vulnerability. The specific flaw exists within ajax_mod_security.php. When parsing the archivo parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9722.

Severity
Critical
CVSS
9.8 (3.1)
Published
2020-07-28
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-749

Affected products

  • control-webpanel / webpanel / 0.9.8.923

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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