CVE-2018-8778 (GCVE-0-2018-8778)

Vulnerability from cvelistv5 – Published: 2018-04-03 22:00 – Updated: 2024-08-05 07:02
VLAI
Summary
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2267 records in the last 180 days details
References
Date Public
2018-03-28 00:00
Show details on NVD website
To clipboard 

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                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2018-04-03T22:29:00.773",
        "references": [
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            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html"
          },
          {
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            "url": "http://www.securityfocus.com/bid/103693"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
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              "VDB Entry"
            ],
            "url": "http://www.securitytracker.com/id/1042004"
          },
          {
            "source": "cve@mitre.org",
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            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:3729"
          },
          {
            "source": "cve@mitre.org",
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            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:3730"
          },
          {
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            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:3731"
          },
          {
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            "url": "https://access.redhat.com/errata/RHSA-2019:2028"
          },
          {
            "source": "cve@mitre.org",
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              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html"
          },
          {
            "source": "cve@mitre.org",
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          },
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          {
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            "url": "https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/"
          },
          {
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          },
          {
            "source": "cve@mitre.org",
            "tags": [
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              "Vendor Advisory"
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            "url": "http://www.securityfocus.com/bid/103693"
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          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-134"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:24:25+00:00",
      "cve": "CVE-2018-8778",
      "id": "CVE-2018-8778",
      "initial_release_date": "2018-03-28T00:00:00+00:00",
      "product_status:fixed": "885",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "47",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ruby: Buffer under-read in String#unpack",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-8778.json",
      "version": "3"
    }
  }
}



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