CVE intelligence and bounded remediation

CVE-2018-1000882 — Webidsupport Webid security vulnerability

High CVSS 7.5

WeBid version up to current version 1.2.2 contains a Directory Traversal vulnerability in getthumb.php that can result in Arbitrary Image File Read. This attack appear to be exploitable via HTTP GET Request. This vulnerability appears to have been fixed in after commit 256a5f9d3eafbc477dcf77c7682446cc4b449c7f.

Severity
High
CVSS
7.5 (3.0)
Published
2018-12-20
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • webidsupport / webid

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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