USN-4754-4: Python 2.7 vulnerability | Cloud Foundry

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

USN-4754-1 fixed vulnerabilities in Python. Because of a regression, a subsequent update removed the fix for CVE-2021-3177. This update reinstates the security fix for CVE-2021-3177.

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)

CVEs contained in this USN include: CVE-2021-3177.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.227.0
• CF Deployment
  • All versions prior to 16.7.0

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 0.227.0 or greater
• CF Deployment
  • Upgrade all versions to 16.7.0 or greater

References

• USN Notice
• CVE-2021-3177

History

2021-03-22: Initial vulnerability report published.