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-2021-42739 First vendor Publication 2021-10-20
Vendor Cve Last vendor Modification 2022-04-06

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
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:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or escalate privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42739

CWE : Common Weakness Enumeration

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

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 7
Os 1
Os 3
Os 3414

Sources (Detail)

Source Url
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1951739
https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ@mwanda/

Alert History

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Date Informations
2022-04-06 21:23:08
  • Multiple Updates
2022-04-02 05:23:17
  • Multiple Updates
2022-03-10 21:23:20
  • Multiple Updates
2022-02-01 01:52:56
  • Multiple Updates
2021-12-17 09:23:04
  • Multiple Updates
2021-12-11 12:53:37
  • Multiple Updates
2021-12-11 01:50:30
  • Multiple Updates
2021-11-18 21:23:06
  • Multiple Updates
2021-11-18 13:23:04
  • Multiple Updates
2021-11-14 12:52:59
  • Multiple Updates
2021-10-27 00:22:59
  • Multiple Updates
2021-10-20 17:22:55
  • Multiple Updates
2021-10-20 13:22:56
  • First insertion