Executive Summary

Informations
Name CVE-2021-28706 First vendor Publication 2021-11-24
Vendor Cve Last vendor Modification 2024-02-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Overall CVSS Score 8.6
Base Score 8.6 Environmental Score 8.6
impact SubScore 4 Temporal Score 8.6
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28706

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-770 Allocation of Resources Without Limits or Throttling

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 17
Os 1
Os 2
Os 154

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://security.gentoo.org/glsa/202402-07
Source Url
DEBIAN https://www.debian.org/security/2021/dsa-5017
MISC https://xenbits.xenproject.org/xsa/advisory-385.txt

Alert History

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Date Informations
2024-02-04 13:28:05
  • Multiple Updates
2023-11-07 21:33:20
  • Multiple Updates
2021-12-16 21:23:07
  • Multiple Updates
2021-12-09 09:23:05
  • Multiple Updates
2021-12-06 21:23:05
  • Multiple Updates
2021-12-02 01:48:29
  • Multiple Updates
2021-12-02 01:46:14
  • Multiple Updates
2021-12-01 17:23:16
  • Multiple Updates
2021-12-01 12:46:51
  • Multiple Updates
2021-11-24 09:23:05
  • First insertion