Executive Summary

Informations
Name CVE-2021-20291 First vendor Publication 2021-04-01
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.1 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20291

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-667 Insufficient Locking

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Os 2
Os 1

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1939485
https://unit42.paloaltonetworks.com/cve-2021-20291/

Alert History

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Date Informations
2023-11-07 21:35:18
  • Multiple Updates
2021-06-02 17:22:55
  • Multiple Updates
2021-05-24 21:23:17
  • Multiple Updates
2021-05-06 21:23:20
  • Multiple Updates
2021-05-04 13:27:23
  • Multiple Updates
2021-05-04 09:22:49
  • Multiple Updates
2021-04-25 05:22:47
  • Multiple Updates
2021-04-25 00:22:48
  • Multiple Updates
2021-04-22 03:13:49
  • Multiple Updates
2021-04-06 21:23:15
  • Multiple Updates
2021-04-02 00:22:54
  • First insertion