Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
It was discovered that the IPsec implementation in the Linux kernel did not properly allocate enough memory when performing ESP transformations, leading to a heap-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
CVEs contained in this USN include: CVE-2022-27666.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- Bionic Stemcells
- 1.x versions prior to 1.76
- All other stemcells not listed.
- cflinuxfs3
- All versions prior to 0.280.0
- CF Deployment
- All versions prior to 20.0.0, or later versions with Bionic Stemcells prior to 1.76 or Xenial Stemcells prior to 621.224
Mitigation
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
- Bionic Stemcells
- Upgrade 1.x versions to 1.76 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- cflinuxfs3
- Upgrade all versions to 0.280.0 or greater
- CF Deployment
- Upgrade all versions to 20.0.0 or greater, upgrade Bionic Stemcells to 1.76 or greater, and upgrade Xenial Stemcells to 621.224 or greater
References
History
2022-05-26: Initial vulnerability report published.
