CVE-2021-20291

Aliases:GHSA-7qw8-847f-pggmGO-2021-0100
Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 01 Apr 2021, 17:49
Last modified:03 Aug 2024, 17:37

Vulnerability Summary

Overall Risk (default)
medium
39/100
CVSS Score
7.1 HIGH
v2.0 (nvd)
EPSS Score
1.03% LOW
1% probability +0.15%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

01 Apr 2021, 17:49
Published
Vulnerability first disclosed
03 Aug 2024, 17:37
Last Modified
Vulnerability information updated

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•HIGH•Score: 7.1AV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 1.03%• Percentile: 78%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • fedoraproject•fedora

    33 | 34

  • github.com/containers•storage

    < 1.28.1

  • redhat•enterprise_linux

    8.0

  • redhat•openshift_container_platform

    4.0

  • storage_project•storage

    < 1.28.1

References (16)