USN-5964-1: curl vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Description

Harry Sintonen discovered that curl incorrectly handled certain TELNET connection options. Due to lack of proper input scrubbing, curl could pass on user name and telnet options to the server as provided, contrary to expectations. (CVE-2023-27533) Harry Sintonen discovered that curl incorrectly handled special tilde characters when used with SFTP paths. A remote attacker could possibly use this issue to circumvent filtering. (CVE-2023-27534) Harry Sintonen discovered that curl incorrectly reused certain FTP connections. This could lead to the wrong credentials being reused, contrary to expectations. (CVE-2023-27535) Harry Sintonen discovered that curl incorrectly reused connections when the GSS delegation option had been changed. This could lead to the option being reused, contrary to expectations. (CVE-2023-27536) Harry Sintonen discovered that curl incorrectly reused certain SSH connections. This could lead to the wrong credentials being reused, contrary to expectations. (CVE-2023-27538) Update Instructions: Run `sudo pro fix USN-5964-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libcurl4-gnutls-dev – 7.58.0-2ubuntu3.24 libcurl4-openssl-dev – 7.58.0-2ubuntu3.24 libcurl3-gnutls – 7.58.0-2ubuntu3.24 libcurl4-doc – 7.58.0-2ubuntu3.24 libcurl3-nss – 7.58.0-2ubuntu3.24 libcurl4-nss-dev – 7.58.0-2ubuntu3.24 libcurl4 – 7.58.0-2ubuntu3.24 curl – 7.58.0-2ubuntu3.24 No subscription required

CVEs contained in this USN include: CVE-2023-27533, CVE-2023-27534, CVE-2023-27535, CVE-2023-27536, CVE-2023-27538.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.188
  • All other stemcells not listed.
• cflinuxfs3
  • All versions prior to 0.357.0
• cflinuxfs4
  • All versions prior to 0.73.0
• Jammy Stemcells
  • 1.x versions prior to 1.95
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to 27.4.0, or later versions with Jammy Stemcells prior to 1.95 or Bionic Stemcells prior to 1.188

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 1.188 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs3
  • Upgrade all versions to 0.357.0 or greater
• cflinuxfs4
  • Upgrade all versions to 0.73.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.95 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade all versions to 27.4.0 or greater, upgrade Jammy Stemcells to 1.95 or greater, and upgrade Bionic Stemcells to 1.188 or greater

History

2023-04-29: Initial vulnerability report published.