Improper Locking

Affecting golang-github-containers-image package, versions *

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Overview

Affected versions of this package are vulnerable to Improper Locking. 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).

Remediation

There is no fixed version for golang-github-containers-image.

References

CVSS Score

6.5
medium severity
  • 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
CVE
CVE-2021-20291
CWE
CWE-667
Snyk ID
SNYK-DEBIANUNSTABLE-GOLANGGITHUBCONTAINERSIMAGE-1243847
Disclosed
01 Apr, 2021
Published
07 Apr, 2021