Severity

medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 18.04

Description

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) It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possily use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 ESM. (CVE-2023-28756) Update Instructions: Run `sudo pro fix USN-6087-1` 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+esm7 ruby2.3 - 2.3.1-2~ubuntu16.04.16+esm7 ruby2.3-dev - 2.3.1-2~ubuntu16.04.16+esm7 ruby2.3-doc - 2.3.1-2~ubuntu16.04.16+esm7 ruby2.3-tcltk - 2.3.1-2~ubuntu16.04.16+esm7 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-28755, CVE-2023-28756

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/CVE-2023-28756
• https://ubuntu.com/security/notices/USN-6087-1
• https://cloudfoundry.org/blog/usn-6087-1

History

2023-06-29: Initial vulnerability report published.