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Vulnerability Details : CVE-2011-4885 (2 public exploits)

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.
Publish Date : 2011-12-29 Last Update Date : 2013-10-10
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P 2011-11-01 2011-12-28
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- Related OVAL Definitions

Title Definition Id Class Family
DEPRECATED: ELSA-2012:0019: php53 and php security update (Moderate) oval:org.mitre.oval:def:23205 unix
DSA-2399-1 php5 -- several oval:org.mitre.oval:def:15401 unix
DSA-2399-2 php5 -- several oval:org.mitre.oval:def:14797 unix
ELSA-2012:0019: php53 and php security update (Moderate) oval:org.mitre.oval:def:23589 unix
ELSA-2012:0033: php security update (Moderate) oval:org.mitre.oval:def:23207 unix
HP-UX Apache Running Tomcat Servlet Engine, Remote Denial of Service (DoS), Access Restriction Bypass oval:org.mitre.oval:def:19791 unix
RHSA-2012:0019: php53 and php security update (Moderate) oval:com.redhat.rhsa:def:20120019 unix
RHSA-2012:0019: php53 and php security update (Moderate) oval:org.mitre.oval:def:21336 unix
RHSA-2012:0033: php security update (Moderate) oval:org.mitre.oval:def:21346 unix
RHSA-2012:0033: php security update (Moderate) oval:com.redhat.rhsa:def:20120033 unix
RHSA-2012:0071: php security update (Moderate) oval:com.redhat.rhsa:def:20120071 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-4885

# Product Type Vendor Product Version Update Edition Language
1 Application PHP PHP 5.0.0 Beta3 Version Details Vulnerabilities
2 Application PHP PHP 5.0.0 Version Details Vulnerabilities
3 Application PHP PHP 5.0.0 Beta2 Version Details Vulnerabilities
4 Application PHP PHP 5.0.0 RC3 Version Details Vulnerabilities
5 Application PHP PHP 5.0.0 Beta1 Version Details Vulnerabilities
6 Application PHP PHP 5.0.0 RC2 Version Details Vulnerabilities
7 Application PHP PHP 5.0.0 RC1 Version Details Vulnerabilities
8 Application PHP PHP 5.0.0 Beta4 Version Details Vulnerabilities
9 Application PHP PHP 5.0.1 Version Details Vulnerabilities
10 Application PHP PHP 5.0.2 Version Details Vulnerabilities
11 Application PHP PHP 5.0.3 Version Details Vulnerabilities
12 Application PHP PHP 5.0.4 Version Details Vulnerabilities
13 Application PHP PHP 5.0.5 Version Details Vulnerabilities
14 Application PHP PHP 5.1.1 Version Details Vulnerabilities
15 Application PHP PHP 5.1.2 Version Details Vulnerabilities
16 Application PHP PHP 5.1.3 Version Details Vulnerabilities
17 Application PHP PHP 5.1.4 Version Details Vulnerabilities
18 Application PHP PHP 5.1.5 Version Details Vulnerabilities
19 Application PHP PHP 5.1.6 Version Details Vulnerabilities
20 Application PHP PHP 5.2.0 Version Details Vulnerabilities
21 Application PHP PHP 5.2.1 Version Details Vulnerabilities
22 Application PHP PHP 5.2.2 Version Details Vulnerabilities
23 Application PHP PHP 5.2.3 Version Details Vulnerabilities
24 Application PHP PHP 5.2.4 Version Details Vulnerabilities
25 Application PHP PHP 5.2.5 Version Details Vulnerabilities
26 Application PHP PHP 5.2.6 Version Details Vulnerabilities
27 Application PHP PHP 5.2.7 Version Details Vulnerabilities
28 Application PHP PHP 5.2.8 Version Details Vulnerabilities
29 Application PHP PHP 5.2.9 Version Details Vulnerabilities
30 Application PHP PHP 5.2.10 Version Details Vulnerabilities
31 Application PHP PHP 5.2.11 Version Details Vulnerabilities
32 Application PHP PHP 5.2.12 Version Details Vulnerabilities
33 Application PHP PHP 5.2.14 Version Details Vulnerabilities
34 Application PHP PHP 5.2.15 Version Details Vulnerabilities
35 Application PHP PHP 5.2.16 Version Details Vulnerabilities
36 Application PHP PHP 5.2.17 Version Details Vulnerabilities
37 Application PHP PHP 5.3.0 Version Details Vulnerabilities
38 Application PHP PHP 5.3.1 Version Details Vulnerabilities
39 Application PHP PHP 5.3.2 Version Details Vulnerabilities
40 Application PHP PHP 5.3.3 Version Details Vulnerabilities
41 Application PHP PHP 5.3.4 Version Details Vulnerabilities
42 Application PHP PHP 5.3.5 Version Details Vulnerabilities
43 Application PHP PHP 5.3.6 Version Details Vulnerabilities
44 Application PHP PHP 5.3.7 Version Details Vulnerabilities
45 Application PHP PHP 5.3.8 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
PHP PHP 45

- References For CVE-2011-4885

http://www.debian.org/security/2012/dsa-2399
DEBIAN DSA-2399
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
HP HPSBMU02786
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
SUSE openSUSE-SU-2012:0426
http://svn.php.net/viewvc?view=revision&revision=321003 CONFIRM
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
APPLE APPLE-SA-2012-05-09-1
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
MANDRIVA MDVSA-2013:150
Exploit! http://www.exploit-db.com/exploits/18305
EXPLOIT-DB 18305 PHP Hash Table Collision Proof Of Concept Author:Christian Mehlmauer Release Date:2012-01-03 (php) dos
http://marc.info/?l=bugtraq&m=132871655717248&w=2
HP HPSBUX02741
http://secunia.com/advisories/48668
SECUNIA 48668
http://rhn.redhat.com/errata/RHSA-2012-0071.html
REDHAT RHSA-2012:0071
http://support.apple.com/kb/HT5281 CONFIRM
http://svn.php.net/viewvc?view=revision&revision=321040 CONFIRM
Exploit! http://www.exploit-db.com/exploits/18296
EXPLOIT-DB 18296 PHP Hashtables Denial of Service Author:infodox Release Date:2012-01-01 (php) dos
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
BUGTRAQ 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table
http://www.mandriva.com/security/advisories?name=MDVSA-2011:197
MANDRIVA MDVSA-2011:197
http://www.securitytracker.com/id?1026473
SECTRACK 1026473
http://www.securityfocus.com/bid/51193
BID 51193 PHP Web Form Hash Collision Denial Of Service Vulnerability Release Date:2013-08-19
http://secunia.com/advisories/47404
SECUNIA 47404
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 CONFIRM
http://www.kb.cert.org/vuls/id/903934
CERT-VN VU#903934
https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
http://www.redhat.com/support/errata/RHSA-2012-0019.html
REDHAT RHSA-2012:0019
http://xforce.iss.net/xforce/xfdb/72021
XF php-hash-dos(72021)

- Metasploit Modules Related To CVE-2011-4885

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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