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CVE-2021-20233

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

Current Description

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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST: NVD
Base Score:  8.2 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.


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上一篇:
CVE-2020-36179发布时间:2022-02-05
下一篇:
CVE-2020-26085发布时间:2022-02-05
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