Severity
High
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
It was discovered that Sudo incorrectly handled memory when parsing command lines. A local attacker could possibly use this issue to obtain unintended access to the administrator account. (CVE-2021-3156)
It was discovered that the Sudo sudoedit utility incorrectly handled checking directory permissions. A local attacker could possibly use this issue to bypass file permissions and determine if a directory exists or not. (CVE-2021-23239)
CVEs contained in this USN include: CVE-2021-3156, CVE-2021-23239.
Affected Cloud Foundry Products and Versions
Severity is high unless otherwise noted.
- cflinuxfs3
- All versions prior to 0.222.0
- Xenial Stemcells
- 456.x versions prior to 456.135
- 621.x versions prior to 621.99
- All other stemcells not listed.
- CF Deployment
- All versions prior to 16.0.0
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 0.222.0 or greater
- Xenial Stemcells
- Upgrade 456.x versions to 456.135 or greater
- Upgrade 621.x versions to 621.99 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- Upgrade All versions to 16.0.0 or greater
References
History
2021-02-10: Initial vulnerability report published.
