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CVE-2011-4815 (GCVE-0-2011-4815)

Vulnerability from cvelistv5 – Published: 2011-12-30 01:00 – Updated: 2024-08-07 00:16
VLAI
Summary
Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://secunia.com/advisories/47405 third-party-advisoryx_refsource_SECUNIA
http://www.securitytracker.com/id?1026474 vdb-entryx_refsource_SECTRACK
http://www.nruns.com/_downloads/advisory28122011.pdf x_refsource_MISC
http://secunia.com/advisories/47822 third-party-advisoryx_refsource_SECUNIA
http://rhn.redhat.com/errata/RHSA-2012-0070.html vendor-advisoryx_refsource_REDHAT
http://jvn.jp/en/jp/JVN90615481/index.html third-party-advisoryx_refsource_JVN
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://www.kb.cert.org/vuls/id/903934 third-party-advisoryx_refsource_CERT-VN
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby… mailing-listx_refsource_MLIST
http://www.ruby-lang.org/en/news/2011/12/28/denia… x_refsource_CONFIRM
http://archives.neohapsis.com/archives/bugtraq/20… mailing-listx_refsource_BUGTRAQ
http://rhn.redhat.com/errata/RHSA-2012-0069.html vendor-advisoryx_refsource_REDHAT
http://support.apple.com/kb/HT5281 x_refsource_CONFIRM
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://jvndb.jvn.jp/ja/contents/2012/JVNDB-2012-0… third-party-advisoryx_refsource_JVNDB
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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        {
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          "tags": [
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        {
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        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.ocert.org/advisories/ocert-2011-003.html"
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          "url": "http://www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/"
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      "sourceIdentifier": "cve@mitre.org",
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        "id": "CVE-2011-4815",
        "lastModified": "2026-04-29T01:13:23.040",
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                "accessVector": "NETWORK",
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                "availabilityImpact": "COMPLETE",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-05-18T10:07:39+00:00",
      "cve": "CVE-2011-4815",
      "id": "CVE-2011-4815",
      "initial_release_date": "2011-12-28T00:00:00+00:00",
      "product_status:fixed": "763",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ruby: hash table collisions CPU usage DoS (oCERT-2011-003)",
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      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-23T00:54:18Z",
      "cve": "CVE-2011-4815",
      "id": "CVE-2011-4815",
      "initial_release_date": "2023-02-15T05:49:43Z",
      "product_status:recommended": "77",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2011-4815",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-4815.json",
      "version": "9"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.