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Unrated severityNVD Advisory· Published Aug 12, 2002· Updated Jun 16, 2026

CVE-2002-0484

CVE-2002-0484

Description

move_uploaded_file in PHP does not does not check for the base directory (open_basedir), which could allow remote attackers to upload files to unintended locations on the system.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

37
  • PHP/PHP37 versions
    cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:*+ 36 more
    • cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.10:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.11:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.12:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.13:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.14:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.15:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.16:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.17:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.18:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.5:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.6:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.7:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.8:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:3.0.9:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.3:patch1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.5:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.6:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.7:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.7:rc1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.7:rc2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.0.7:rc3:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.1.0:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.1.1:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:4.1.2:*:*:*:*:*:*:*
    • (no CPE)

Patches

Vulnerability mechanics

Root cause

"The `move_uploaded_file` function in PHP did not properly check `open_basedir` restrictions."

Attack vector

An attacker could craft a script that utilizes the `move_uploaded_file` function to upload a file to an arbitrary location on the server, bypassing `safe_mode` and `open_basedir` restrictions [ref_id=1]. This is possible because the function, by default, does not verify if the destination path adheres to the configured `open_basedir` settings [ref_id=1]. The attacker would need to have a web-accessible script that can execute PHP code and upload files.

Affected code

The vulnerability lies within the `move_uploaded_file` function in PHP. Specifically, the issue was that this function did not adequately enforce `open_basedir` restrictions, allowing uploaded files to be moved to directories outside the permitted scope [ref_id=1]. A proposed fix involved adding a call to `php_check_open_basedir` within the function's logic.

What the fix does

The fix involves ensuring that `move_uploaded_file` respects `open_basedir` restrictions by calling `php_check_open_basedir` on the destination path before moving the file [ref_id=1]. This check verifies that the target directory is within the allowed paths defined by `open_basedir`, thereby preventing files from being written to unintended locations.

Preconditions

  • configPHP must be configured with `safe_mode` or `open_basedir` restrictions enabled.
  • inputThe attacker must be able to upload a file via a web script.

Generated on Jun 2, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

6

News mentions

0

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