gsd-2020-27779
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-27779",
"description": "A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub\u0027s memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"id": "GSD-2020-27779",
"references": [
"https://www.suse.com/security/cve/CVE-2020-27779.html",
"https://www.debian.org/security/2021/dsa-4867",
"https://access.redhat.com/errata/RHSA-2021:3675",
"https://access.redhat.com/errata/RHSA-2021:2790",
"https://access.redhat.com/errata/RHSA-2021:2566",
"https://access.redhat.com/errata/RHSA-2021:1734",
"https://access.redhat.com/errata/RHSA-2021:0704",
"https://access.redhat.com/errata/RHSA-2021:0703",
"https://access.redhat.com/errata/RHSA-2021:0702",
"https://access.redhat.com/errata/RHSA-2021:0701",
"https://access.redhat.com/errata/RHSA-2021:0700",
"https://access.redhat.com/errata/RHSA-2021:0699",
"https://access.redhat.com/errata/RHSA-2021:0698",
"https://access.redhat.com/errata/RHSA-2021:0697",
"https://access.redhat.com/errata/RHSA-2021:0696",
"https://ubuntu.com/security/CVE-2020-27779",
"https://advisories.mageia.org/CVE-2020-27779.html",
"https://security.archlinux.org/CVE-2020-27779",
"https://linux.oracle.com/cve/CVE-2020-27779.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
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"id": "GSD-2020-27779",
"modified": "2023-12-13T01:22:11.310137Z",
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"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
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"exploitabilityScore": 0.8,
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},
"lastModifiedDate": "2022-10-21T19:23Z",
"publishedDate": "2021-03-03T17:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.