USN-5020-1: Ruby vulnerabilities | Cloud Foundry

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2021-31799)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to conduct port scans and service banner extractions. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-31810)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to perform man-in-the-middle attackers to bypass the TLS protection. (CVE-2021-32066)

CVEs contained in this USN include: CVE-2021-31799, CVE-2021-32066, CVE-2021-31810.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.250.0
• CF Deployment
  • All versions prior to 16.22.0

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 0.250.0 or greater
• CF Deployment
  • Upgrade all versions to 16.22.0 or greater

References

• USN Notice
• CVE-2021-31799
• CVE-2021-32066
• CVE-2021-31810

History

2021-09-03: Initial vulnerability report published.