FKIE_CVE-2017-7482

Vulnerability from fkie_nvd - Published: 2018-07-30 14:29 - Updated: 2026-06-17 01:24
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.
References
secalert@redhat.comhttp://seclists.org/oss-sec/2017/q2/602Mailing List, Patch, Third Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/99299Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securitytracker.com/id/1038787Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2019:0641Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0Patch, Vendor Advisory
secalert@redhat.comhttps://www.debian.org/security/2017/dsa-3927Third Party Advisory
secalert@redhat.comhttps://www.debian.org/security/2017/dsa-3945Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/oss-sec/2017/q2/602Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99299Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1038787Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0641Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-3927Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-3945Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 8.0
debian debian_linux 9.0
redhat enterprise_mrg 2.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "kernel:",
          "vendor": "[UNKNOWN]",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "versionEndExcluding": "3.2.90",
              "vulnerable": true
            },
            {
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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              "vulnerable": true
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          ],
          "negate": false,
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation."
    },
    {
      "lang": "es",
      "value": "en el kernel de Linux en versiones anteriores a la 4.12, los tickets de Kerberos 5 descifrados al emplear las claves RXRPC de forma incorrecta asumen el tama\u00f1o de un campo. Esto podr\u00eda conducir a un wrapping de la variable que mantiene el tama\u00f1o y en que el puntero de datos vaya m\u00e1s all\u00e1 final del b\u00fafer. Esto podr\u00eda conducir a una corrupci\u00f3n de memoria y a un posible escalado de privilegios."
    }
  ],
  "id": "CVE-2017-7482",
  "lastModified": "2026-06-17T01:24:26.283",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "secalert@redhat.com",
        "type": "Secondary"
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    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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    ]
  },
  "published": "2018-07-30T14:29:02.990",
  "references": [
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      "source": "secalert@redhat.com",
      "tags": [
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  "vulnStatus": "Modified",
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  ]
}



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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.



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