USN-4754-2: Python regression | Cloud Foundry

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04
• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

USN-4754-1 fixed a vulnerability in Python. The fix for CVE-2021-3177 introduced a regression in Python 2.7. This update reverts the security fix pending further investigation.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. (CVE-2020-27619, CVE-2021-3177)

Affected Cloud Foundry Products and Versions

• cflinuxfs3
  • All versions prior to 0.226.0
• CF Deployment
  • All versions prior to 16.5.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs3
  • Upgrade All versions to 0.226.0 or greater
• CF Deployment
  • Upgrade All versions to 16.5.0 or greater

References

• USN Notice

History

2021-03-02: Initial vulnerability report published.