Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04
• Canonical Ubuntu 22.04

Description

Yebo Cao discovered that Python incorrectly handled certain URLs. An attacker could use this issue to bypass blockinglisting methods. This issue was first addressed in USN-5960-1, but was incomplete. Here we address an additional fix to that issue. (CVE-2023-24329) Update Instructions: Run sudo pro fix USN-6139-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: python2.7-dev – 2.7.12-1ubuntu0~16.04.18+esm5 python2.7-doc – 2.7.12-1ubuntu0~16.04.18+esm5 libpython2.7-stdlib – 2.7.12-1ubuntu0~16.04.18+esm5 libpython2.7-minimal – 2.7.12-1ubuntu0~16.04.18+esm5 libpython2.7 – 2.7.12-1ubuntu0~16.04.18+esm5 libpython2.7-testsuite – 2.7.12-1ubuntu0~16.04.18+esm5 python2.7 – 2.7.12-1ubuntu0~16.04.18+esm5 idle-python2.7 – 2.7.12-1ubuntu0~16.04.18+esm5 python2.7-examples – 2.7.12-1ubuntu0~16.04.18+esm5 libpython2.7-dev – 2.7.12-1ubuntu0~16.04.18+esm5 python2.7-minimal – 2.7.12-1ubuntu0~16.04.18+esm5 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro libpython3.5-stdlib – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5-venv – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5-doc – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5-dev – 3.5.2-2ubuntu0~16.04.13+esm8 libpython3.5-dev – 3.5.2-2ubuntu0~16.04.13+esm8 libpython3.5-minimal – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5 – 3.5.2-2ubuntu0~16.04.13+esm8 idle-python3.5 – 3.5.2-2ubuntu0~16.04.13+esm8 libpython3.5-testsuite – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5-examples – 3.5.2-2ubuntu0~16.04.13+esm8 python3.5-minimal – 3.5.2-2ubuntu0~16.04.13+esm8 libpython3.5 – 3.5.2-2ubuntu0~16.04.13+esm8 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-24329.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions
  • All other stemcells not listed.
• cflinuxfs4
  • All versions prior to 1.17.0
• Jammy Stemcells
  • 1.x versions prior to 1.147
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to 30.0.0, or later versions with Jammy Stemcells prior to 1.147

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below.

The Cloud Foundry project recommends upgrading the following releases:

• Bionic Stemcells
  • There are no fixed versions of this product
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs4
  • Upgrade all versions to 1.17.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.147 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade all versions to 30.0.0 or greater and upgrade Jammy Stemcells to 1.147 or greater

References

• USN Notice
• VMware Tanzu Disclosure
• CVE-2023-24329

History

2023-10-05: Initial vulnerability report published.