Severity

medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 18.04

Description

USN-6055-1 fixed a vulnerability in Ruby. Unfortunately it introduced a regression. This update reverts the patches applied to CVE-2023-28755 in order to fix the regression pending further investigation. We apologize for the inconvenience. Original advisory details: It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. (CVE-2023-28755) Update Instructions: Run `sudo pro fix USN-6055-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libruby2.3 - 2.3.1-2~ubuntu16.04.16+esm6 ruby2.3 - 2.3.1-2~ubuntu16.04.16+esm6 ruby2.3-dev - 2.3.1-2~ubuntu16.04.16+esm6 ruby2.3-doc - 2.3.1-2~ubuntu16.04.16+esm6 ruby2.3-tcltk - 2.3.1-2~ubuntu16.04.16+esm6 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-28755

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Isolation Segment
  • 2.11.x versions prior to 2.11.33
  • 2.13.x versions prior to 2.13.18
  • 3.0.x versions prior to 3.0.11
  • 4.0.x versions prior to 4.0.2
• VMware Tanzu Application Service for VMs
  • 2.11.x versions prior to 2.11.39
  • 2.13.x versions prior to 2.13.21
  • 3.0.x versions prior to 3.0.11
  • 4.0.x versions prior to 4.0.2

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:

• Isolation Segment
  • 2.11.33
  • 2.13.18
  • 3.0.11
  • 4.0.2
• VMware Tanzu Application Service for VMs
  • 2.11.39
  • 2.13.21
  • 3.0.11
  • 4.0.2

References

• https://ubuntu.com/security/CVE-2023-28755
• https://ubuntu.com/security/notices/USN-6055-2
• https://cloudfoundry.org/blog/usn-6055-2

History

2023-06-29: Initial vulnerability report published.