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-2021-33200 First vendor Publication 2021-05-27
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low 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

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33200

CWE : Common Weakness Enumeration

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

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1
Application 1
Os 2
Os 3424

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210706-0004/
MISC https://www.openwall.com/lists/oss-security/2021/05/27/1

Alert History

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Date Informations
2024-03-12 13:16:55
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2024-02-02 02:25:50
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2024-02-01 12:24:00
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2024-01-12 02:18:32
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2023-12-29 02:16:38
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2023-11-22 02:16:03
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2023-11-07 21:34:51
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2023-09-29 13:10:47
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2023-09-05 13:20:08
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2023-09-05 01:23:31
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2023-09-02 13:18:44
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2023-09-02 01:23:53
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2023-08-12 13:24:51
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2023-08-12 01:23:07
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2023-08-11 13:17:06
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2023-08-11 01:23:52
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2023-08-06 13:15:05
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2023-08-06 01:22:51
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2023-08-04 13:15:27
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2023-07-14 13:15:31
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2023-06-06 13:07:40
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2023-04-13 02:05:49
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2023-03-29 02:17:41
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2023-03-28 12:23:14
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2023-02-24 21:27:38
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2023-01-20 02:05:25
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2022-10-11 13:07:25
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2022-05-14 00:27:33
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2021-12-11 12:52:03
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2021-08-26 12:43:20
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2021-08-24 01:43:51
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2021-08-19 12:44:11
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2021-08-05 01:43:06
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2021-07-06 13:22:58
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2021-06-04 21:23:07
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2021-06-04 00:22:50
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2021-06-03 00:22:48
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2021-06-01 12:39:06
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2021-05-29 05:22:46
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2021-05-27 17:22:48
  • First insertion