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Security Advisory

USN-5422-1: libxml2 vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

Shinji Sato discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, and Ubuntu 16.04 ESM. (CVE-2022-23308) It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-29824) Update Instructions: Run `sudo ua fix USN-5422-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: python-libxml2 – 2.9.4+dfsg1-6.1ubuntu1.6 libxml2-utils – 2.9.4+dfsg1-6.1ubuntu1.6 libxml2 – 2.9.4+dfsg1-6.1ubuntu1.6 python3-libxml2 – 2.9.4+dfsg1-6.1ubuntu1.6 libxml2-doc – 2.9.4+dfsg1-6.1ubuntu1.6 libxml2-dev – 2.9.4+dfsg1-6.1ubuntu1.6 No subscription required

CVEs contained in this USN include: CVE-2022-23308, CVE-2022-29824.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.84
    • All other stemcells not listed.
  • cflinuxfs3
    • All versions prior to 0.298.0
  • CF Deployment
    • All versions prior to 21.0.0, or later versions with Xenial Stemcells prior to 621.244 or Bionic Stemcells prior to 1.84

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 1.84 or greater
    • All other stemcells should be upgraded to the latest version available onĀ bosh.io.
  • cflinuxfs3
    • Upgrade all versions to 0.298.0 or greater
  • CF Deployment
    • Upgrade all versions to 21.0.0 or greater, upgrade Xenial Stemcells to 621.244 or greater, and upgrade Bionic Stemcells to 1.84 or greater

History

2022-07-29: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

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