Buffer Overflow Affecting tpm2-tss package, versions <0:2.3.2-5.el8
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Test your applications- Snyk ID SNYK-CENTOS8-TPM2TSS-3243498
- published 20 Jan 2023
- disclosed 20 Jan 2023
Introduced: 20 Jan 2023
CVE-2023-22745 Open this link in a new tabHow to fix?
Upgrade Centos:8
tpm2-tss
to version 0:2.3.2-5.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tpm2-tss
package and not the tpm2-tss
package as distributed by Centos
.
See How to fix?
for Centos:8
relevant fixed versions and status.
tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In affected versions Tss2_RC_SetHandler
and Tss2_RC_Decode
both index into layer_handler
with an 8 bit layer number, but the array only has TPM2_ERROR_TSS2_RC_LAYER_COUNT
entries, so trying to add a handler for higher-numbered layers or decode a response code with such a layer number reads/writes past the end of the buffer. This Buffer overrun, could result in arbitrary code execution. An example attack would be a MiTM bus attack that returns 0xFFFFFFFF for the RC. Given the common use case of TPM modules an attacker must have local access to the target machine with local system privileges which allows access to the TPM system. Usually TPM access requires administrative privilege.