Test ID:	1.3.6.1.4.1.25623.1.1.2.2023.1987
Category:	Huawei EulerOS Local Security Checks
Title:	Huawei EulerOS: Security Advisory for tpm2-tss (EulerOS-SA-2023-1987)
Summary:	The remote host is missing an update for the Huawei EulerOS 'tpm2-tss' package(s) announced via the EulerOS-SA-2023-1987 advisory.
Description:	Summary: The remote host is missing an update for the Huawei EulerOS 'tpm2-tss' package(s) announced via the EulerOS-SA-2023-1987 advisory. Vulnerability Insight: 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.(CVE-2023-22745) Affected Software/OS: 'tpm2-tss' package(s) on Huawei EulerOS V2.0SP10(x86_64). Solution: Please install the updated package(s). CVSS Score: 5.9 CVSS Vector: AV:L/AC:H/Au:M/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2023-22745 https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5 https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67
Copyright	Copyright (C) 2023 Greenbone AG

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