USN-4398-1: DBus vulnerability
Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
Kevin Backhouse discovered that DBus incorrectly handled file descriptors. A local attacker could possibly use this issue to cause DBus to crash, resulting in a denial of service.
CVEs contained in this USN include: CVE-2020-12049.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- cflinuxfs3
- All versions prior to 0.195.0
- Xenial Stemcells
- 170.x versions prior to 170.222
- 250.x versions prior to 250.201
- 315.x versions prior to 315.188
- 456.x versions prior to 456.115
- 621.x versions prior to 621.77
- All other stemcells not listed.
- CF Deployment
- All versions prior to v13.5.0
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 0.195.0 or greater
- Xenial Stemcells
- Upgrade 170.x versions to 170.222 or greater
- Upgrade 250.x versions to 250.201 or greater
- Upgrade 315.x versions to 315.188 or greater
- Upgrade 456.x versions to 456.115 or greater
- Upgrade 621.x versions to 621.77 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- Upgrade All versions to v13.5.0 or greater
References
History
2020-06-16: Initial vulnerability report published.