=========================================================================Ubuntu Security Notice USN-5933-1
March 07, 2023

libtpms vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Libtpms.

Software Description:
- libtpms: TPM emulation library

Details:

Francisco Falcon discovered that Libtpms did not properly manage memory
when performing certain cryptographic operations. An attacker could
possibly use this issue to cause a denial of service, or possibly execute
arbitrary code. (CVE-2023-1017, CVE-2023-1018)

It was discovered that Libtpms did not properly manage memory when
handling certain commands. An attacker could possibly use this issue
to cause a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
   libtpms0                        0.9.3-0ubuntu1.22.10.1

Ubuntu 22.04 LTS:
   libtpms0                        0.9.3-0ubuntu1.22.04.1

After a standard system update you need to restart any application
using Libtpms libraries to make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-5933-1
   CVE-2023-1017, CVE-2023-1018, https://bugs.launchpad.net/ubuntu/+source/libtpms/+bug/2009608

Package Information:
   https://launchpad.net/ubuntu/+source/libtpms/0.9.3-0ubuntu1.22.10.1
   https://launchpad.net/ubuntu/+source/libtpms/0.9.3-0ubuntu1.22.04.1