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cloudfoundryCloud FoundryCFOUNDRY:9E4F229463FCBB3F72D8A43A5A386007
HistoryFeb 10, 2021 - 12:00 a.m.

USN-4694-1: Linux kernel vulnerability | Cloud Foundry

2021-02-1000:00:00
Cloud Foundry
www.cloudfoundry.org
15

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

5.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

72.9%

Severity

High

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04
  • Canonical Ubuntu 16.04

Description

It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data.

CVEs contained in this USN include: CVE-2020-28374.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

  • Xenial Stemcells
    • 456.x versions prior to 456.133
    • 621.x versions prior to 621.97
    • All other stemcells not listed.

Mitigation

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

  • Xenial Stemcells
    • Upgrade 456.x versions to 456.133 or greater
    • Upgrade 621.x versions to 621.97 or greater
    • All other stemcells should be upgraded to the latest version available on bosh.io.

References

History

2021-02-10: Initial vulnerability report published.

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

5.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

72.9%