==========================================================================
Ubuntu Security Notice USN-6796-1
May 29, 2024

tpm2-tss vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in TPM2 Software Stack.

Software Description:
- tpm2-tss: TPM2 Software Stack library

Details:

Fergus Dall discovered that TPM2 Software Stack did not properly handle
layer arrays. An attacker could possibly use this issue to cause
TPM2 Software Stack to crash, resulting in a denial of service, or
possibly execute arbitrary code.
(CVE-2023-22745)

Jurgen Repp and Andreas Fuchs discovered that TPM2 Software Stack did not
validate the quote data after deserialization. An attacker could generate
an arbitrary quote and cause TPM2 Software Stack to have unknown behavior.
(CVE-2024-29040)

Update instructions:

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

Ubuntu 24.04 LTS
   libtss2-esys-3.0.2-0t64         4.0.1-7.1ubuntu5.1
   libtss2-fapi1t64                4.0.1-7.1ubuntu5.1
   libtss2-mu-4.0.1-0t64           4.0.1-7.1ubuntu5.1
   libtss2-policy0t64              4.0.1-7.1ubuntu5.1
   libtss2-rc0t64                  4.0.1-7.1ubuntu5.1
   libtss2-sys1t64                 4.0.1-7.1ubuntu5.1
   libtss2-tcti-cmd0t64            4.0.1-7.1ubuntu5.1
   libtss2-tcti-device0t64         4.0.1-7.1ubuntu5.1
   libtss2-tcti-libtpms0t64        4.0.1-7.1ubuntu5.1
   libtss2-tcti-mssim0t64          4.0.1-7.1ubuntu5.1
   libtss2-tcti-pcap0t64           4.0.1-7.1ubuntu5.1
   libtss2-tcti-spi-helper0t64     4.0.1-7.1ubuntu5.1
   libtss2-tcti-swtpm0t64          4.0.1-7.1ubuntu5.1
   libtss2-tctildr0t64             4.0.1-7.1ubuntu5.1

Ubuntu 23.10
   libtss2-esys-3.0.2-0            4.0.1-3ubuntu1.1
   libtss2-fapi1                   4.0.1-3ubuntu1.1
   libtss2-mu0                     4.0.1-3ubuntu1.1
   libtss2-policy0                 4.0.1-3ubuntu1.1
   libtss2-rc0                     4.0.1-3ubuntu1.1
   libtss2-sys1                    4.0.1-3ubuntu1.1
   libtss2-tcti-cmd0               4.0.1-3ubuntu1.1
   libtss2-tcti-device0            4.0.1-3ubuntu1.1
   libtss2-tcti-libtpms0           4.0.1-3ubuntu1.1
   libtss2-tcti-mssim0             4.0.1-3ubuntu1.1
   libtss2-tcti-pcap0              4.0.1-3ubuntu1.1
   libtss2-tcti-spi-helper0        4.0.1-3ubuntu1.1
   libtss2-tcti-swtpm0             4.0.1-3ubuntu1.1
   libtss2-tctildr0                4.0.1-3ubuntu1.1

Ubuntu 22.04 LTS
   libtss2-esys-3.0.2-0            3.2.0-1ubuntu1.1
   libtss2-fapi1                   3.2.0-1ubuntu1.1
   libtss2-mu0                     3.2.0-1ubuntu1.1
   libtss2-rc0                     3.2.0-1ubuntu1.1
   libtss2-sys1                    3.2.0-1ubuntu1.1
   libtss2-tcti-cmd0               3.2.0-1ubuntu1.1
   libtss2-tcti-device0            3.2.0-1ubuntu1.1
   libtss2-tcti-mssim0             3.2.0-1ubuntu1.1
   libtss2-tcti-swtpm0             3.2.0-1ubuntu1.1
   libtss2-tctildr0                3.2.0-1ubuntu1.1

Ubuntu 20.04 LTS
   libtss2-esys0                   2.3.2-1ubuntu0.20.04.2

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6796-1
   CVE-2023-22745, CVE-2024-29040

Package Information:
   https://launchpad.net/ubuntu/+source/tpm2-tss/4.0.1-7.1ubuntu5.1
   https://launchpad.net/ubuntu/+source/tpm2-tss/4.0.1-3ubuntu1.1
   https://launchpad.net/ubuntu/+source/tpm2-tss/3.2.0-1ubuntu1.1
   https://launchpad.net/ubuntu/+source/tpm2-tss/2.3.2-1ubuntu0.20.04.2