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Directory Traversal Affecting docker-bash-completion package, versions <19.03.15_ce-6.43.3

Severity

0.0
low
0
10

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-SLES151-DOCKERBASHCOMPLETION-2689274
  • published 14 Apr 2022
  • disclosed 11 Feb 2021
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Introduced: 11 Feb 2021

CVE-2021-21284 Open this link in a new tab
CWE-22 Open this link in a new tab

How to fix?

Upgrade SLES:15.1 docker-bash-completion to version 19.03.15_ce-6.43.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream docker-bash-completion package and not the docker-bash-completion package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can modify files under "/var/lib/docker/<remapping>" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.

References

CVSS Scores

version 3.1
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Snyk

2.5 low
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None
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NVD

6.8 medium
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SUSE

2.5 low
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Red Hat

6 medium