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Security Advisory

USN-5051-1: OpenSSL vulnerabilities

Severity

High

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 18.04

Description

John Ouyang discovered that OpenSSL incorrectly handled decrypting SM2 data. A remote attacker could use this issue to cause applications using OpenSSL to crash, resulting in a denial of service, or possibly change application behaviour. (CVE-2021-3711)

Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1 strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2021-3712)

CVEs contained in this USN include: CVE-2021-3711, CVE-2021-3712.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.25
    • All other stemcells not listed.
  • cflinuxfs3
    • All versions prior to 0.253.0
  • CF Deployment
    • All versions prior to 16.23.0

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 1.25 or greater
    • All other stemcells should be upgraded to the latest version available onĀ bosh.io.
  • cflinuxfs3
    • Upgrade all versions to 0.253.0 or greater
  • CF Deployment
    • Upgrade all versions to 16.23.0 or greater

History

2021-09-07: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

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