Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2021-21974 First vendor Publication 2021-02-24
Vendor Cve Last vendor Modification 2022-06-02

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Adjacent Attack Complexity Low
Privileges Required None 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:A/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 5.8 Attack Range Adjacent network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 6.5 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability. A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21974

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 29
Os 3
Os 231

SAINT Exploits

Description Link
VMware ESXi OpenSLP heap overflow More info here

Sources (Detail)

Source Url
CONFIRM https://www.vmware.com/security/advisories/VMSA-2021-0002.html
MISC http://packetstormsecurity.com/files/162957/VMware-ESXi-OpenSLP-Heap-Overflow...
https://www.zerodayinitiative.com/advisories/ZDI-21-250/

Alert History

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Date Informations
2023-02-10 21:27:16
  • Multiple Updates
2022-12-17 01:58:48
  • Multiple Updates
2022-12-16 01:55:48
  • Multiple Updates
2022-06-02 21:27:27
  • Multiple Updates
2022-05-27 21:27:34
  • Multiple Updates
2022-04-09 01:55:01
  • Multiple Updates
2022-01-08 01:46:22
  • Multiple Updates
2021-11-30 12:49:14
  • Multiple Updates
2021-06-04 00:23:02
  • Multiple Updates
2021-05-04 14:07:30
  • Multiple Updates
2021-04-22 03:12:40
  • Multiple Updates
2021-04-06 01:35:33
  • Multiple Updates
2021-03-26 12:38:03
  • First insertion