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Last updated: 8/1/2014 10:25:06 PM

CVE Publication rate: 17.5

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Vulnerability Workload Index: 6.81
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NVD is a product of the NIST Computer Security Division and is sponsored by the Department of Homeland Security's National Cyber Security Division. It supports the U.S. government multi-agency (OSD, DHS, NSA, DISA, and NIST) Information Security Automation Program. It is the U.S. government content repository for the Security Content Automation Protocol (SCAP).

National Cyber Awareness System

Vulnerability Summary for CVE-2011-4885

Original release date: 12/29/2011
Last revised: 10/10/2013
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BUGTRAQ
Name: 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table
External Source: MANDRIVA
Name: MDVSA-2011:197
External Source: DEBIAN
Name: DSA-2399
External Source: HP
Name: SSRT100877
External Source: MISC
Name: http://www.nruns.com/_downloads/advisory28122011.pdf
External Source: XF
Name: php-hash-dos(72021)
External Source: BID
Name: 51193
External Source: REDHAT
Name: RHSA-2012:0019
External Source: CONFIRM
Name: http://support.apple.com/kb/HT5281
External Source: MISC
Name: http://www.ocert.org/advisories/ocert-2011-003.html
External Source: SECUNIA
Name: 47404
US-CERT Vulnerability Note: CERT-VN
Name: VU#903934
External Source: HP
Name: HPSBMU02786
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
External Source: EXPLOIT-DB
Name: 18305
External Source: APPLE
Name: APPLE-SA-2012-05-09-1
External Source: REDHAT
Name: RHSA-2012:0071
External Source: EXPLOIT-DB
Name: 18296
External Source: MANDRIVA
Name: MDVSA-2013:150
External Source: CONFIRM
Name: http://svn.php.net/viewvc?view=revision&revision=321040
External Source: CONFIRM
Name: http://svn.php.net/viewvc?view=revision&revision=321003
External Source: SECUNIA
Name: 48668
External Source: HP
Name: HPSBUX02741
External Source: SUSE
Name: openSUSE-SU-2012:0426
External Source: MISC
Name: https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
External Source: SECTRACK
Name: 1026473

Technical Details

Vulnerability Type (View All)