fkie_cve-2018-19854
Vulnerability from fkie_nvd
Published
2018-12-04 16:29
Modified
2024-11-21 03:58
Summary
An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).
References
cve@mitre.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087Patch, Vendor Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:3309
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:3517
cve@mitre.orghttps://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087Patch, Third Party Advisory
cve@mitre.orghttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
cve@mitre.orghttps://usn.ubuntu.com/3872-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3878-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3878-2/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3901-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3901-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3309
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3517
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3872-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3878-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3878-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3901-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3901-2/Third Party Advisory
Impacted products



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F729629A-5EA0-4542-BC58-0409385C14EB",
              "versionEndExcluding": "4.19.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",
              "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option)."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en el kernel de Linux hasta antes de la versi\u00f3n 4.19.3. crypto_report_one() y otras funciones relacionadas en crypto/crypto_user.c (la API de configuraci\u00f3n de usuarios crypto) no inicializan completamente las estructuras que se copian en el espacio de usuario, lo que podr\u00eda filtrar memoria sensible a los programas del usuario. NOTA: esta es una regresi\u00f3n de CVE-2013-2547, pero con una explotabilidad m\u00e1s sencilla. Esto se deba a que el atacante no necesita una capacidad (sin embargo, el sistema debe tener la opci\u00f3n de kconfig CONFIG_CRYPTO_USER)."
    }
  ],
  "id": "CVE-2018-19854",
  "lastModified": "2024-11-21T03:58:41.303",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 1.9,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  },
  "published": "2018-12-04T16:29:00.587",
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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