Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 14.04
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
Demi Obenour discovered that Kerberos incorrectly handled certain ASN.1. An attacker could possibly use this issue to cause a denial of service.
CVEs contained in this USN include: CVE-2020-28196.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- cflinuxfs3
- All versions prior to 0.211.0
- Xenial Stemcells
- 315.x versions prior to 315.202
- 456.x versions prior to 456.129
- 621.x versions prior to 621.93
- All other stemcells not listed.
- CF Deployment
- All versions prior to 15.4.0
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 0.211.0 or greater
- Xenial Stemcells
- Upgrade 315.x versions to 315.202 or greater
- Upgrade 456.x versions to 456.129 or greater
- Upgrade 621.x versions to 621.93 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- Upgrade All versions to 15.4.0 or greater
References
History
2021-01-13: Initial vulnerability report published.
