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cloudfoundryCloud FoundryCFOUNDRY:5D46E1921B653A6A458A17E985170312
HistoryFeb 10, 2021 - 12:00 a.m.

USN-4512-1: util-linux vulnerability | Cloud Foundry

2021-02-1000:00:00
Cloud Foundry
www.cloudfoundry.org
7

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.0004 Low

EPSS

Percentile

5.3%

Severity

Negligible

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 18.04

Description

It was discovered that the umount bash completion script shipped in util-linux incorrectly handled certain mountpoints. If a local attacker were able to create arbitrary mountpoints, another user could be tricked into executing arbitrary code when attempting to run the umount command with bash completion.

CVEs contained in this USN include: CVE-2018-7738.

Affected Cloud Foundry Products and Versions

Severity is negligible unless otherwise noted.

  • cflinuxfs3
    • All versions prior to 0.205.0
  • CF Deployment
    • All versions prior to 14.0.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

  • cflinuxfs3
    • Upgrade All versions to 0.205.0 or greater
  • CF Deployment
    • Upgrade All versions to 14.0.0 or greater

References

History

2021-02-10: Initial vulnerability report published.

CPENameOperatorVersion
cflinuxfs3lt0.205.0
cf deploymentlt14.0.0

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.0004 Low

EPSS

Percentile

5.3%