medium
5
CWE
20
Advisory Published
Updated

CVE-2011-4885: Input Validation

First published: Fri Dec 30 2011(Updated: )

PHP before 5.3.9 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP<=5.3.8
PHP=5.2.9
PHP=5.1.5
PHP=5.3.6
PHP=5.1.2
PHP=5.3.1
PHP=5.1.1
PHP=5.2.14
PHP=5.0.0-beta1
PHP=5.1.6
PHP=5.2.16
PHP=5.2.7
PHP=5.2.2
PHP=5.0.5
PHP=5.0.1
PHP=5.1.4
PHP=5.2.5
PHP=5.0.4
PHP=5.2.12
PHP=5.2.11
PHP=5.2.6
PHP=5.2.17
PHP=5.3.0
PHP=5.0.0-rc2
PHP=5.2.3
PHP=5.3.3
PHP=5.0.3
PHP=5.3.7
PHP=5.0.0-rc3
PHP=5.2.0
PHP=5.2.4
PHP=5.0.0-beta3
PHP=5.3.2
PHP=5.3.4
PHP=5.1.3
PHP=5.2.10
PHP=5.0.0-rc1
PHP=5.0.2
PHP=5.2.15
PHP=5.3.5
PHP=5.2.1
PHP=5.0.0-beta4
PHP=5.0.0
PHP=5.0.0-beta2
PHP=5.2.8

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-4885?

    CVE-2011-4885 is classified as a high severity vulnerability due to its potential to cause denial of service by consuming significant CPU resources.

  • How do I fix CVE-2011-4885?

    To fix CVE-2011-4885, upgrade PHP to version 5.3.9 or later.

  • What types of attacks can CVE-2011-4885 enable?

    CVE-2011-4885 can enable remote denial of service attacks through predictable hash collision vulnerabilities.

  • Which versions of PHP are affected by CVE-2011-4885?

    CVE-2011-4885 affects PHP versions prior to 5.3.9, including versions 5.2.9 and earlier.

  • How can I identify if my server is vulnerable to CVE-2011-4885?

    To identify if your server is vulnerable to CVE-2011-4885, check the PHP version running on your server and compare it to the affected versions.

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