Executive Summary

Informations
Name CVE-2021-20263 First vendor Publication 2021-03-09
Vendor Cve Last vendor Modification 2022-09-30

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Overall CVSS Score 3.3
Base Score 3.3 Environmental Score 3.3
impact SubScore 1.4 Temporal Score 3.3
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:N/I:P/A:N)
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

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20263

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-281 Improper Preservation of Permissions

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 196

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210507-0002/
GENTOO https://security.gentoo.org/glsa/202208-27
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1933668
https://www.openwall.com/lists/oss-security/2021/03/08/1

Alert History

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Date Informations
2024-02-02 02:21:05
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2024-02-01 12:22:33
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2023-09-05 13:15:26
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2023-09-05 01:22:08
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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 01:21:39
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2023-08-11 13:12:36
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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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2022-10-11 13:03:32
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2022-10-11 01:21:22
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2022-09-30 17:27:34
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2022-08-15 17:27:49
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2022-01-01 21:23:03
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2021-06-05 01:43:24
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2021-05-07 21:23:25
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2021-05-07 12:38:03
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2021-05-04 14:08:46
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2021-04-22 03:13:50
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2021-04-06 17:23:17
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2021-03-26 12:36:51
  • First insertion