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cloudfoundryCloud FoundryCFOUNDRY:30A00C196E388762A2434A745BE1363E
HistoryJun 11, 2021 - 12:00 a.m.

USN-4968-1: LZ4 vulnerability | Cloud Foundry

2021-06-1100:00:00
Cloud Foundry
www.cloudfoundry.org
12

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

50.0%

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 18.04

Description

It was discovered that LZ4 incorrectly handled certain memory operations. If a user or automated system were tricked into uncompressing a specially- crafted LZ4 file, a remote attacker could use this issue to cause LZ4 to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVEs contained in this USN include: CVE-2021-3520.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.10
    • All other stemcells not listed.
  • cflinuxfs3
    • All versions prior to 0.240.0
  • CF Deployment
    • All versions prior to 16.15.0

Mitigation

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

  • Bionic Stemcells
    • Upgrade 1.x versions to 1.10 or greater
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • cflinuxfs3
    • Upgrade all versions to 0.240.0 or greater
  • CF Deployment
    • Upgrade all versions to 16.15.0 or greater

References

History

2021-06-11: Initial vulnerability report published.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

50.0%

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