CVE-2011-2705 (GCVE-0-2011-2705)

Vulnerability from cvelistv5 – Published: 2011-08-05 21:00 – Updated: 2024-08-06 23:08
VLAI
Summary
The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 980 records in the last 180 days details
References
Date Public
2011-07-11 00:00
Show details on NVD website
To clipboard 

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            ],
            "url": "http://www.openwall.com/lists/oss-security/2011/07/20/16"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.redhat.com/support/errata/RHSA-2011-1581.html"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securityfocus.com/bid/49015"
          },
          {
            "source": "secalert@redhat.com",
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            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=722415"
          },
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            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html"
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            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html"
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            "url": "http://redmine.ruby-lang.org/issues/4579"
          },
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          },
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          },
          {
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            "url": "http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "http://www.openwall.com/lists/oss-security/2011/07/11/1"
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            "url": "http://www.openwall.com/lists/oss-security/2011/07/12/14"
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          {
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          },
          {
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          },
          {
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            "url": "http://www.redhat.com/support/errata/RHSA-2011-1581.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            ],
            "url": "http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            ],
            "url": "http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/49015"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=722415"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-05-08T15:05:34+00:00",
      "cve": "CVE-2011-2705",
      "id": "CVE-2011-2705",
      "initial_release_date": "2011-07-02T00:00:00+00:00",
      "product_status:fixed": "388",
      "product_status:known_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ruby: Properly initialize the random number generator when forking new process",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-2705.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





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.



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.