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Improper Locking in github.com/containers/storage

Moderate severity GitHub Reviewed Published May 10, 2021 to the GitHub Advisory Database • Updated Feb 14, 2023

Package

gomod github.com/containers/storage (Go)

Affected versions

< 1.28.1

Patched versions

1.28.1

Description

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).

References

Published by the National Vulnerability Database Apr 1, 2021
Reviewed May 4, 2021
Published to the GitHub Advisory Database May 10, 2021
Last updated Feb 14, 2023

Severity

Moderate
6.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2021-20291

GHSA ID

GHSA-7qw8-847f-pggm

Source code

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