github - ghsa-257g-8w4g-3cc3

ghsa-257g-8w4g-3cc3

Vulnerability from github

Published

2022-05-24 17:43

Modified

2022-05-24 17:43

Severity ?

8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Details

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-20233"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-03T17:15:00Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-257g-8w4g-3cc3",
  "modified": "2022-05-24T17:43:32Z",
  "published": "2022-05-24T17:43:32Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20233"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202104-05"
    },
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    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-20233

Vulnerability from cvelistv5

Published

2021-03-03 16:44

Modified

2024-08-03 17:37

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1926263	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202104-05	vendor-advisory, x_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	n/a	grub2

Show details on NVD website

To clipboard

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