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Test ID:1.3.6.1.4.1.25623.1.0.802408
Category:Denial of Service
Title:PHP Web Form Hash Collision Denial of Service Vulnerability - Windows
Summary:PHP is prone to a remote denial of service vulnerability.
Description:Summary:
PHP is prone to a remote denial of service vulnerability.

Vulnerability Insight:
The flaws are due to an error in,

- A hash generation function when hashing form posts and updating a hash
table. This can be exploited to cause a hash collision resulting in high
CPU consumption via a specially crafted form sent in a HTTP POST request.

- PDORow implementation, when interacting with the session feature.

- timezone functionality, when handling php_date_parse_tzfile cache.

Vulnerability Impact:
Successful exploitation could allow remote attackers to cause a denial
of service via a specially crafted form sent in a HTTP POST request.

Affected Software/OS:
PHP Version 5.3.8 and prior.

Solution:
Update PHP to 5.3.9 or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4885
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
BugTraq ID: 51193
http://www.securityfocus.com/bid/51193
Bugtraq: 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table (Google Search)
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
CERT/CC vulnerability note: VU#903934
http://www.kb.cert.org/vuls/id/903934
Debian Security Information: DSA-2399 (Google Search)
http://www.debian.org/security/2012/dsa-2399
http://www.exploit-db.com/exploits/18296
http://www.exploit-db.com/exploits/18305
HPdes Security Advisory: HPSBMU02786
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
HPdes Security Advisory: HPSBOV02763
http://marc.info/?l=bugtraq&m=133469208622507&w=2
HPdes Security Advisory: HPSBUX02741
http://marc.info/?l=bugtraq&m=132871655717248&w=2
HPdes Security Advisory: SSRT100728
HPdes Security Advisory: SSRT100826
HPdes Security Advisory: SSRT100877
http://www.mandriva.com/security/advisories?name=MDVSA-2011:197
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.nruns.com/_downloads/advisory28122011.pdf
http://www.ocert.org/advisories/ocert-2011-003.html
https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
http://www.redhat.com/support/errata/RHSA-2012-0019.html
RedHat Security Advisories: RHSA-2012:0071
http://rhn.redhat.com/errata/RHSA-2012-0071.html
http://www.securitytracker.com/id?1026473
http://secunia.com/advisories/47404
http://secunia.com/advisories/48668
SuSE Security Announcement: SUSE-SU-2012:0411 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
SuSE Security Announcement: openSUSE-SU-2012:0426 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
XForce ISS Database: php-hash-dos(72021)
https://exchange.xforce.ibmcloud.com/vulnerabilities/72021
Common Vulnerability Exposure (CVE) ID: CVE-2012-0788
Common Vulnerability Exposure (CVE) ID: CVE-2012-0789
CopyrightCopyright (C) 2012 Greenbone AG

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