medium
6.2
CWE
362
Advisory Published
Updated

CVE-2006-5178: Race Condition

First published: Fri Oct 06 2006(Updated: )

Race condition in the symlink function in PHP 5.1.6 and earlier allows local users to bypass the open_basedir restriction by using a combination of symlink, mkdir, and unlink functions to change the file path after the open_basedir check and before the file is opened by the underlying system, as demonstrated by symlinking a symlink into a subdirectory, to point to a parent directory via .. (dot dot) sequences, and then unlinking the resulting symlink.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP=4.3.9
PHP=5.1.5
PHP=5.1.2
PHP=4.2.0
PHP=5.1.1
PHP=4.4.4
PHP=4.1.0
PHP=4.3.4
PHP=4.0.4
PHP=4.3.0
PHP=4.0.5
PHP=5.0-rc1
PHP=5.0.5
PHP=4.3.6
PHP=5.0.1
PHP=5.1.4
PHP=4.0.7-rc2
PHP=4.3.7
PHP=5.0.4
PHP=4.0.7-rc1
PHP=4.2.2
PHP=4.4.2
PHP=4.3.2
PHP=4.3.11
PHP<=5.1.6
PHP=4.0.3-patch1
PHP=4.0.7
PHP=4.0.2
PHP=4.3.3
PHP=5.0-rc3
PHP=4.1.1
PHP=4.4.3
PHP=5.0.3
PHP=4.2.3
PHP=5.1.0
PHP=4.0.1-patch1
PHP=4.0
PHP=4.0.1-patch2
PHP=4.0.6
PHP=5.0-rc2
PHP=4.1.2
PHP=4.0.7-rc3
PHP=4.3.1
PHP=5.1.3
PHP=4.4.0
PHP=4.3.10
PHP=4.2.1
PHP=4.0.1
PHP=5.0.2
PHP=4.2
PHP=4.4.1
PHP=5.0.0
PHP=4.3.8
PHP=4.3.5

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Reference Links

Frequently Asked Questions

  • What is the vulnerability description of CVE-2006-5178?

    CVE-2006-5178 describes a race condition in the symlink function in PHP versions up to 5.1.6 that allows local users to bypass the open_basedir restriction.

  • What PHP versions are affected by CVE-2006-5178?

    CVE-2006-5178 affects PHP versions 4.0 to 5.1.6, including various subversions and release candidates.

  • How can I mitigate CVE-2006-5178?

    To mitigate CVE-2006-5178, it is recommended to upgrade to PHP version 5.1.7 or later, which addresses this vulnerability.

  • What are the risks associated with CVE-2006-5178?

    The risk associated with CVE-2006-5178 is that a local user could bypass security restrictions, potentially gaining unauthorized access to files.

  • Is CVE-2006-5178 a critical vulnerability?

    CVE-2006-5178 is considered a serious vulnerability as it can be exploited by local users to compromise system security.

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