GHSA-GMQM-WGP3-R69Q

Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2022-11-16 12:00
VLAI?
Details

GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.

Severity ?
6.4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2020-15706"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-07-29T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.",
  "id": "GHSA-gmqm-wgp3-r69q",
  "modified": "2022-11-16T12:00:19Z",
  "published": "2022-05-24T17:24:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15706"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/vulnerabilities/grub2bootloader"
    },
    {
      "type": "WEB",
      "url": "https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202104-05"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200731-0008"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4432-1"
    },
    {
      "type": "WEB",
      "url": "https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4735"
    },
    {
      "type": "WEB",
      "url": "https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2020/07/29/3"
    },
    {
      "type": "WEB",
      "url": "https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue"
    },
    {
      "type": "WEB",
      "url": "https://www.suse.com/support/kb/doc/?id=000019673"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "http://ubuntu.com/security/notices/USN-4432-1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2020/07/29/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/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.



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