Severity

medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 18.04

Description

It was discovered that Kerberos incorrectly handled memory when processing KDC data, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service or have other unspecified impacts. (CVE-2021-36222, CVE-2021-37750) Update Instructions: Run `sudo pro fix USN-5959-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libk5crypto3 - 1.16-2ubuntu0.4 krb5-kpropd - 1.16-2ubuntu0.4 libkdb5-9 - 1.16-2ubuntu0.4 krb5-user - 1.16-2ubuntu0.4 libgssrpc4 - 1.16-2ubuntu0.4 libkrb5support0 - 1.16-2ubuntu0.4 krb5-doc - 1.16-2ubuntu0.4 libkrb5-dev - 1.16-2ubuntu0.4 krb5-pkinit - 1.16-2ubuntu0.4 libkrb5-3 - 1.16-2ubuntu0.4 krb5-kdc-ldap - 1.16-2ubuntu0.4 krb5-otp - 1.16-2ubuntu0.4 krb5-gss-samples - 1.16-2ubuntu0.4 libkrad-dev - 1.16-2ubuntu0.4 krb5-locales - 1.16-2ubuntu0.4 libgssapi-krb5-2 - 1.16-2ubuntu0.4 krb5-kdc - 1.16-2ubuntu0.4 krb5-multidev - 1.16-2ubuntu0.4 krb5-k5tls - 1.16-2ubuntu0.4 libkrad0 - 1.16-2ubuntu0.4 libkadm5srv-mit11 - 1.16-2ubuntu0.4 libkadm5clnt-mit11 - 1.16-2ubuntu0.4 krb5-admin-server - 1.16-2ubuntu0.4 No subscription required

CVEs contained in this USN include: CVE-2021-36222, CVE-2021-37750

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Platform Automation Toolkit
  • 4.4.x versions prior to 4.4.31
  • 5.0.x versions prior to 5.0.24
  • 5.1.x versions prior to 5.1.1
• Isolation Segment
  • 2.11.x versions prior to 2.11.31
  • 2.13.x versions prior to 2.13.16
  • 3.0.x versions prior to 3.0.9
• VMware Tanzu Application Service for VMs
  • 2.11.x versions prior to 2.11.37
  • 2.13.x versions prior to 2.13.19
  • 3.0.x versions prior to 3.0.9

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:

• Platform Automation Toolkit
  • 4.4.31
  • 5.0.24
  • 5.1.1
• Isolation Segment
  • 2.11.31
  • 2.13.16
  • 3.0.9
  • 4.0.0+LTS-T
• VMware Tanzu Application Service for VMs
  • 2.11.37
  • 2.13.19
  • 3.0.9
  • 4.0.0+LTS-T

References

• https://ubuntu.com/security/CVE-2021-36222
• https://ubuntu.com/security/CVE-2021-37750
• https://ubuntu.com/security/notices/USN-5959-1
• https://cloudfoundry.org/blog/usn-5959-1

History

2023-05-22: Initial vulnerability report published.