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cloudfoundryCloud FoundryCFOUNDRY:322886B40F0FE55C516FF12037103125
HistoryMay 14, 2020 - 12:00 a.m.

USN-4333-1: Python vulnerabilities | Cloud Foundry

2020-05-1400:00:00
Cloud Foundry
www.cloudfoundry.org
20

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.006 Low

EPSS

Percentile

78.4%

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04
  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

It was discovered that Python incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. (CVE-2019-18348)

It was discovered that Python incorrectly handled certain HTTP requests. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-8492)

CVEs contained in this USN include: CVE-2019-18348, CVE-2020-8492.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • cflinuxfs3
    • All versions prior to 0.176.0
  • Xenial Stemcells
    • 170.x versions prior to 170.217
    • 250.x versions prior to 250.196
    • 315.x versions prior to 315.181
    • 456.x versions prior to 456.110
    • 621.x versions prior to 621.71
    • All other stemcells not listed.
  • CF Deployment
    • All versions prior to v13.0.0

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 0.176.0 or greater
  • Xenial Stemcells
    • Upgrade 170.x versions to 170.217 or greater
    • Upgrade 250.x versions to 250.196 or greater
    • Upgrade 315.x versions to 315.181 or greater
    • Upgrade 456.x versions to 456.110 or greater
    • Upgrade 621.x versions to 621.71 or greater
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • CF Deployment
    • Upgrade All versions to v13.0.0 or greater

References

History

2020-04-21: Initial vulnerability report published.

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.006 Low

EPSS

Percentile

78.4%