Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
It was discovered that GLib incorrectly handled certain symlinks when replacing files. If a user or automated system were tricked into extracting a specially crafted file with File Roller, a remote attacker could possibly create files outside of the intended directory.
CVEs contained in this USN include: CVE-2021-28153.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- cflinuxfs3
- All versions prior to 0.230.0
- Xenial Stemcells
- 456.x versions prior to 456.152
- 621.x versions prior to 621.115
- All other stemcells not listed.
- CF Deployment
- All versions prior to 16.11.0
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 0.230.0 or greater
- Xenial Stemcells
- Upgrade 456.x versions to 456.152 or greater
- Upgrade 621.x versions to 621.115 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- Upgrade all versions to 16.11.0 or greater
References
History
2021-04-14: Initial vulnerability report published.
