Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2020-27749 | First vendor Publication | 2021-03-03 |
Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | |||
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Overall CVSS Score | 6.7 | ||
Base Score | 6.7 | Environmental Score | 6.7 |
impact SubScore | 5.9 | Temporal Score | 6.7 |
Exploitabality Sub Score | 0.8 | ||
Attack Vector | Local | Attack Complexity | Low |
Privileges Required | High | User Interaction | None |
Scope | Unchanged | 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:L/Au:N/C:C/I:C/A:C) | |||
---|---|---|---|
Cvss Base Score | 7.2 | Attack Range | Local |
Cvss Impact Score | 10 | Attack Complexity | Low |
Cvss Expoit Score | 3.9 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. 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-2020-27749 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-121 | Stack-based Buffer Overflow |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
Date | Informations |
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2023-11-07 21:35:34 |
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2022-05-14 00:27:37 |
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2022-03-25 12:52:46 |
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2021-05-05 01:40:06 |
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2021-05-04 13:23:58 |
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2021-05-01 09:22:51 |
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2021-04-24 05:22:52 |
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2021-04-22 03:04:01 |
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2021-03-26 12:34:20 |
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