CVE-2011-4885: Input Validation

Q: 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.

Q: How do I fix CVE-2011-4885?

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

Q: What types of attacks can CVE-2011-4885 enable?

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

Q: 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.

Q: 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.

Published 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.

Affected Software

45 affected components

PHP PHP<=5.3.8

PHP PHP=5.2.9

PHP PHP=5.1.5

PHP PHP=5.3.6

PHP PHP=5.1.2

PHP PHP=5.3.1

PHP PHP=5.1.1

PHP PHP=5.2.14

PHP PHP=5.0.0-beta1

PHP PHP=5.1.6

PHP PHP=5.2.16

PHP PHP=5.2.7

PHP PHP=5.2.2

PHP PHP=5.0.5

PHP PHP=5.0.1

PHP PHP=5.1.4

PHP PHP=5.2.5

PHP PHP=5.0.4

PHP PHP=5.2.12

PHP PHP=5.2.11

PHP PHP=5.2.6

PHP PHP=5.2.17

PHP PHP=5.3.0

PHP PHP=5.0.0-rc2

PHP PHP=5.2.3

PHP PHP=5.3.3

PHP PHP=5.0.3

PHP PHP=5.3.7

PHP PHP=5.0.0-rc3

PHP PHP=5.2.0

PHP PHP=5.2.4

PHP PHP=5.0.0-beta3

PHP PHP=5.3.2

PHP PHP=5.3.4

PHP PHP=5.1.3

PHP PHP=5.2.10

PHP PHP=5.0.0-rc1

PHP PHP=5.0.2

PHP PHP=5.2.15

PHP PHP=5.3.5

PHP PHP=5.2.1

PHP PHP=5.0.0-beta4

PHP PHP=5.0.0

PHP PHP=5.0.0-beta2

PHP PHP=5.2.8

Event History

Dec 30, 2011

CVE Published

via MITRE·01:00 AM

Data Sourced

via MITRE·01:00 AM

Description

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?