FKIE_CVE-2018-16396

Vulnerability from fkie_nvd - Published: 2018-11-16 18:29 - Updated: 2026-06-17 01:44
Severity
8.1 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
cve@mitre.orghttp://www.securitytracker.com/id/1042106Third Party Advisory, VDB Entry
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:2028
cve@mitre.orghttps://hackerone.com/reports/385070Permissions Required, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/10/msg00020.htmlThird Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20190221-0002/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3808-1/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2018/dsa-4332Third Party Advisory
cve@mitre.orghttps://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/Vendor Advisory
cve@mitre.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/Release Notes
cve@mitre.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/Release Notes
cve@mitre.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/Release Notes
cve@mitre.orghttps://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/Release Notes
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1042106Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2028
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/385070Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/10/msg00020.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190221-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3808-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4332Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/Release Notes
af854a3a-2127-422b-91ae-364da2661108https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/Release Notes
af854a3a-2127-422b-91ae-364da2661108https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/Release Notes
af854a3a-2127-422b-91ae-364da2661108https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/Release Notes
Impacted products
Vendor Product Version
ruby-lang ruby *
ruby-lang ruby *
ruby-lang ruby *
ruby-lang ruby 2.6.0
ruby-lang ruby 2.6.0
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 18.10
debian debian_linux 8.0
debian debian_linux 9.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 7.4
redhat enterprise_linux 7.5
redhat enterprise_linux 7.6
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en Ruby, en versiones anteriores a la 2.3.8, versiones 2.4.x anteriores a la 2.4.5, versiones 2.5.x anteriores a la 2.5.2 y versiones 2.6.x anteriores a la 2.6.0-preview3. No contamina las cadenas que resultan de desempaquetar cadenas contaminadas con algunos formatos."
    }
  ],
  "id": "CVE-2018-16396",
  "lastModified": "2026-06-17T01:44:13.073",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
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        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-11-16T18:29:01.083",
  "references": [
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html"
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  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}



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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.