Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

It was discovered that systemd incorrectly handled certain DNS requests, which leads to user-after-free vulnerability. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-2526) Update Instructions: Run sudo ua fix USN-5583-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: systemd-tests – 237-3ubuntu10.54 systemd-coredump – 237-3ubuntu10.54 systemd – 237-3ubuntu10.54 libsystemd0 – 237-3ubuntu10.54 systemd-container – 237-3ubuntu10.54 libnss-myhostname – 237-3ubuntu10.54 libudev1 – 237-3ubuntu10.54 libsystemd-dev – 237-3ubuntu10.54 libnss-systemd – 237-3ubuntu10.54 systemd-journal-remote – 237-3ubuntu10.54 libpam-systemd – 237-3ubuntu10.54 libudev-dev – 237-3ubuntu10.54 libnss-mymachines – 237-3ubuntu10.54 libnss-resolve – 237-3ubuntu10.54 systemd-sysv – 237-3ubuntu10.54 udev – 237-3ubuntu10.54 No subscription required

CVEs contained in this USN include: CVE-2022-2526.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.107
  • All other stemcells not listed.
• cflinuxfs3
  • All versions prior to 0.323.0
• CF Deployment
  • All versions prior to 21.11.0, or later versions with Bionic Stemcells prior to 1.107

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 1.107 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs3
  • Upgrade all versions to 0.323.0 or greater
• CF Deployment
  • Upgrade all versions to 21.11.0 or greater and upgrade Bionic Stemcells to 1.107 or greater

References

• USN Notice
• CVE-2022-2526

History

2022-09-29: Initial vulnerability report published.