Cloud Foundry Logo
blog single gear
Security Advisory

USN-5587-1: curl vulnerability

USN-5587-1: curl vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04


Axel Chong discovered that when curl accepted and sent back cookies containing control bytes that a HTTP(S) server might return a 400 (Bad Request Error) response. A malicious cookie host could possibly use this to cause denial-of-service. Update Instructions: Run `sudo ua fix USN-5587-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libcurl4-gnutls-dev – 7.47.0-1ubuntu2.19+esm5 libcurl4-openssl-dev – 7.47.0-1ubuntu2.19+esm5 libcurl3-gnutls – 7.47.0-1ubuntu2.19+esm5 libcurl4-doc – 7.47.0-1ubuntu2.19+esm5 libcurl3-nss – 7.47.0-1ubuntu2.19+esm5 libcurl4-nss-dev – 7.47.0-1ubuntu2.19+esm5 libcurl3 – 7.47.0-1ubuntu2.19+esm5 curl – 7.47.0-1ubuntu2.19+esm5 Available with UA Infra or UA Desktop:

CVEs contained in this USN include: CVE-2022-35252.

Affected Cloud Foundry Products and Versions

Severity is low unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.107
    • All other stemcells not listed.
  • cflinuxfs3
    • All versions prior to 0.320.0
  • CF Deployment
    • All versions prior to 21.9.0, or later versions with Bionic Stemcells prior to 1.107 or Xenial Stemcells prior to 621.280


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 1.107 or greater
    • All other stemcells should be upgraded to the latest version available on
  • cflinuxfs3
    • Upgrade all versions to 0.320.0 or greater
  • CF Deployment
    • Upgrade all versions to 21.9.0 or greater, upgrade Bionic Stemcells to 1.107 or greater, and upgrade Xenial Stemcells to 621.280 or greater


2022-09-29: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR