Executive Summary

Informations
Name CVE-2020-27779 First vendor Publication 2021-03-03
Vendor Cve Last vendor Modification 2021-05-01

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 6 Temporal Score 7.5
Exploitabality Sub Score 0.8
 
Attack Vector Local Attack Complexity High
Privileges Required High User Interaction None
Scope Changed Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27779

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-285 Improper Access Control (Authorization)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 7
Os 1
Os 2
Os 6
Os 3
Os 4
Os 1

Sources (Detail)

Source Url
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
GENTOO https://security.gentoo.org/glsa/202104-05
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1900698

Alert History

If you want to see full details history, please login or register.
0
1
2
3
4
5
Date Informations
2021-05-05 01:40:06
  • Multiple Updates
2021-05-04 13:23:58
  • Multiple Updates
2021-05-01 09:22:51
  • Multiple Updates
2021-04-24 05:22:52
  • Multiple Updates
2021-04-22 03:04:01
  • Multiple Updates
2021-03-26 12:34:22
  • First insertion