Executive Summary

Informations
Name CVE-2021-20257 First vendor Publication 2022-03-16
Vendor Cve Last vendor Modification 2023-02-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 4 Temporal Score 6.5
Exploitabality Sub Score 2
 
Attack Vector Local Attack Complexity Low
Privileges Required Low 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:L/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 2.1 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20257

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 206
Application 2
Os 1
Os 1
Os 3
Os 1
Os 1

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20220425-0003/
GENTOO https://security.gentoo.org/glsa/202208-27
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1930087
https://github.com/qemu/qemu/commit/3de46e6fc489c52c9431a8a832ad8170a7569bd8
https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07428.html
https://www.openwall.com/lists/oss-security/2021/02/25/2
MLIST https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

Alert History

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Date Informations
2024-02-02 02:21:05
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2024-02-01 12:22:32
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2023-09-05 13:15:26
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2023-09-05 01:22:07
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2023-09-02 13:14:09
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2023-09-02 01:22:26
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2023-08-12 13:20:01
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2023-08-12 01:21:38
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2023-08-11 13:12:35
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2023-08-11 01:22:19
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2023-08-06 13:10:42
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2023-08-06 01:21:24
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2023-08-04 13:11:04
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2023-08-04 01:21:45
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2023-07-14 13:11:06
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2023-07-14 01:21:34
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2023-03-29 02:13:28
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2023-03-28 12:21:49
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2023-02-13 00:27:32
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2023-02-03 05:27:38
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2022-10-11 13:03:32
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2022-10-11 01:21:22
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2022-09-23 21:27:33
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2022-09-05 12:53:01
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2022-08-19 09:27:36
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2022-08-15 17:27:41
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2022-05-13 00:23:08
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2022-04-26 02:05:44
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2022-03-22 21:22:57
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2022-03-16 21:22:52
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2022-03-16 17:22:53
  • First insertion