CVE-2011-4885 (GCVE-0-2011-4885)

Vulnerability from cvelistv5 – Published: 2011-12-30 01:00 – Updated: 2024-08-07 00:16
VLAI
Summary
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.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2157 records in the last 180 days details
References
URL Tags
https://github.com/FireFart/HashCollision-DOS-POC… x_refsource_MISC
http://h20000.www2.hp.com/bizsupport/TechSupport/… vendor-advisoryx_refsource_HP
http://www.securitytracker.com/id?1026473 vdb-entryx_refsource_SECTRACK
http://secunia.com/advisories/47404 third-party-advisoryx_refsource_SECUNIA
http://marc.info/?l=bugtraq&m=133469208622507&w=2 vendor-advisoryx_refsource_HP
http://www.nruns.com/_downloads/advisory28122011.pdf x_refsource_MISC
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://www.exploit-db.com/exploits/18296 exploitx_refsource_EXPLOIT-DB
http://www.debian.org/security/2012/dsa-2399 vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://www.exploit-db.com/exploits/18305 exploitx_refsource_EXPLOIT-DB
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://secunia.com/advisories/48668 third-party-advisoryx_refsource_SECUNIA
http://www.redhat.com/support/errata/RHSA-2012-00… vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/51193 vdb-entryx_refsource_BID
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://www.kb.cert.org/vuls/id/903934 third-party-advisoryx_refsource_CERT-VN
http://svn.php.net/viewvc?view=revision&revision=321003 x_refsource_CONFIRM
http://svn.php.net/viewvc?view=revision&revision=321040 x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2012-0071.html vendor-advisoryx_refsource_REDHAT
http://marc.info/?l=bugtraq&m=132871655717248&w=2 vendor-advisoryx_refsource_HP
http://archives.neohapsis.com/archives/bugtraq/20… mailing-listx_refsource_BUGTRAQ
http://support.apple.com/kb/HT5281 x_refsource_CONFIRM
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://www.ocert.org/advisories/ocert-2011-003.html x_refsource_MISC
Date Public
2011-12-28 00:00
Show details on NVD website
To clipboard 

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            "value": "PHP anterior a v5.3.9 calcula los valores hash de los par\u00e1metros de forma, sin restringir la capacidad de desencadenar colisiones hash predecible, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU) mediante el env\u00edo de gran cantidad de par\u00e1metros a mano."
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              "source": "nvd@nist.gov",
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            "url": "http://svn.php.net/viewvc?view=revision\u0026revision=321040"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2012/dsa-2399"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.exploit-db.com/exploits/18296"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.exploit-db.com/exploits/18305"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "US Government Resource"
            ],
            "url": "http://www.kb.cert.org/vuls/id/903934"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:197"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:150"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.nruns.com/_downloads/advisory28122011.pdf"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.ocert.org/advisories/ocert-2011-003.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.redhat.com/support/errata/RHSA-2012-0019.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/51193"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id?1026473"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/72021"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:54:47+00:00",
      "cve": "CVE-2011-4885",
      "id": "CVE-2011-4885",
      "initial_release_date": "2011-12-28T00:00:00+00:00",
      "product_status:fixed": "1551",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "php: hash table collisions CPU usage DoS (oCERT-2011-003)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-4885.json",
      "version": "3"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.