GHSA-7CFH-R37C-4MQR

Vulnerability from github – Published: 2022-05-13 01:44 – Updated: 2025-04-20 03:50
VLAI?
Details

The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.

Severity ?
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2017-17806"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-12-20T23:29:00Z",
    "severity": "HIGH"
  },
  "details": "The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.",
  "id": "GHSA-7cfh-r37c-4mqr",
  "modified": "2025-04-20T03:50:21Z",
  "published": "2022-05-13T01:44:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-17806"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:2948"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3583-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3583-2"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3617-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3617-2"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3617-3"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3619-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3619-2"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3632-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2017/dsa-4073"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2018/dsa-4082"
    },
    {
      "type": "WEB",
      "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/102293"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.