FKIE_CVE-2018-19854

Vulnerability from fkie_nvd - Published: 2018-12-04 16:29 - Updated: 2026-06-17 01:49
Severity
4.7 (Medium) - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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
Vendor Product Version
linux linux_kernel *
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 18.10
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      ],
      "source": "cve@mitre.org"
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  ],
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  "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": "2026-06-17T01:49:59.953",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
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          "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",
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          "scope": "UNCHANGED",
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  "published": "2018-12-04T16:29:00.587",
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}



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