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Improper Locking Affecting buildah package, versions <0:1.22.3-2.module+el8.5.0+12582+56d94c81

Severity

 Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.52% (78th percentile)

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  • Snyk ID SNYK-CENTOS8-BUILDAH-1959497
  • published 26 Jul 2021
  • disclosed 1 Apr 2021
Report a new vulnerability Found a mistake?

Introduced: 1 Apr 2021

CVE-2021-20291 Open this link in a new tab
CWE-667 Open this link in a new tab

How to fix?

Upgrade Centos:8 buildah to version 0:1.22.3-2.module+el8.5.0+12582+56d94c81 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream buildah package and not the buildah package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

6.5 medium
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SUSE

6.5 medium