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

GHSA-257G-8W4G-3CC3

Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2022-05-24 17:43

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.

Severity ?

8.2 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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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": [
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      "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 (GCVE-0-2021-20233)

Vulnerability from cvelistv5 – Published: 2021-03-03 16:44 – Updated: 2024-08-03 17:37

Summary

Severity ?

No CVSS data available.

CWE

CWE-787

Assigner

redhat

References

URL

Tags

	https://bugzilla.redhat.com/show_bug.cgi?id=1926263	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://security.gentoo.org/glsa/202104-05	vendor-advisoryx_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-2022032…	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Affected: grub 2.06

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JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-257G-8W4G-3CC3

CVE-2021-20233 (GCVE-0-2021-20233)

Tags

Sightings

Nomenclature