Vulnerability CVE-2011-4885

Vulnerability CVE-2011-4885

Published: 2011-12-29 Modified: 2012-02-13

Description:

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.

See advisories in our WLB2 database:

	Topic	Author	Date
Med.	PHP 5.3.8 Hashtables Proof Of Concept	me	02.01.2012

Type:

CWE-20

(Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score	Impact Subscore	Exploitability Subscore
5/10	2.9/10	10/10

Exploit range	Attack complexity	Authentication
Remote	Low	No required
Confidentiality impact	Integrity impact	Availability impact
None	None	Partial

Affected software
PHP -> PHP

References:

http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041

http://lists.apple.com/archives/security-announce/2012/May/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html

http://marc.info/?l=bugtraq&m=132871655717248&w=2

http://marc.info/?l=bugtraq&m=133469208622507&w=2

http://rhn.redhat.com/errata/RHSA-2012-0071.html

http://support.apple.com/kb/HT5281

http://svn.php.net/viewvc?view=revision&revision=321003

http://svn.php.net/viewvc?view=revision&revision=321040

http://www.debian.org/security/2012/dsa-2399

http://www.exploit-db.com/exploits/18296

http://www.exploit-db.com/exploits/18305

http://www.kb.cert.org/vuls/id/903934

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

http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html

http://www.redhat.com/support/errata/RHSA-2012-0019.html

http://www.securityfocus.com/bid/51193

http://www.securitytracker.com/id?1026473

https://exchange.xforce.ibmcloud.com/vulnerabilities/72021

https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py

Vulnerability CVE-2011-4885

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.

See advisories in our WLB2 database:

Med.

PHP 5.3.8 Hashtables Proof Of Concept

CWE-20

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

5/10

2.9/10

10/10

Remote

Low

No required

None

None

Partial

Affected software

References: