A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2022:0274 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2021-3746:
      A flaw was found in the libtpms code that may cause access beyond the boundary of internal buffers. The     vulnerability is triggered by specially-crafted TPM2 command packets that then trigger the issue when the     state of the TPM2's volatile state is written. The highest threat from this vulnerability is to system     availability. This issue affects libtpms versions before 0.8.5, before 0.7.9 and before 0.6.6.

      CVE-2021-3623:
      A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets     containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is     marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system     availability.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets     containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is     marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system     availability. (CVE-2021-3623)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the libtpms-0.9.1-2.20211126git1ff6fe1f43.el9 build changelog.

  - out-of-bounds access when trying to resume the state of the vTPM (CVE-2021-3623)

  - out-of-bounds access via specially crafted TPM 2 command packets (CVE-2021-3746)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the libtpms-0.8.2-0.20210301git729fc6a4ca.el9.6 build changelog.

  - out-of-bounds access when trying to resume the state of the vTPM (CVE-2021-3623)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:4457-1 advisory.

    - CVE-2021-3623: Fixed out-of-bounds access when trying to resume the       state of the vTPM (bsc#1187767)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9240 advisory.

    libtpms     [0.8.8-1.el7]
    - spec: Update spec file to version 0.8.8

    * Fri Sep 17 2021 Stefan Berger - 0.8.7-1
    - tpm2: Fixes for building and running with OpenSSL 3.0

    * Fri Sep 10 2021 Stefan Berger - 0.8.6-1
    - tpm2: Marshal event sequence objects' hash state

    * Wed Sep 01 2021 Stefan Berger - 0.8.5-1
    - tpm2: NVMarshal: Handle index orderly RAM without 0-sized terminating node
    - tpm2: Initialize a whole OBJECT before using it

    * Wed Jun 23 2021 Stefan Berger - 0.8.4-1
    - tpm2: Reset too large size indicators in TPM2B to avoid access beyond buffer

    * Tue Jun 01 2021 Stefan Berger - 0.8.3-1
    - tpm2: Work-around for Windows 2016 & 2019 bug related to ContextLoad

    swtpm     [0.3.4-5.el7]
    - swtpm: Check header size indicator against expected size (CID 375869) (Stefan       Berger)  [Orabug: 33876933]  {CVE-2022-23645}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
239862	TencentOS Server 3: libtpms (TSSA-2022:0274)	Nessus	Tencent Local Security Checks	Local	medium
223957	Linux Distros Unpatched Vulnerability : CVE-2021-3623	Nessus	Misc.	Local	medium
191313	CentOS 9 : libtpms-0.9.1-2.20211126git1ff6fe1f43.el9	Nessus	CentOS Local Security Checks	Local	medium
191284	CentOS 9 : libtpms-0.8.2-0.20210301git729fc6a4ca.el9.6	Nessus	CentOS Local Security Checks	Local	medium
168718	SUSE SLES15 / openSUSE 15 Security Update : libtpms (SUSE-SU-2022:4457-1)	Nessus	SuSE Local Security Checks	Local	medium
159123	Oracle Linux 7 : libtpms (ELSA-2022-9240)	Nessus	Oracle Linux Local Security Checks	Local	medium

Detections

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CVE-2021-3623

medium

Tenable Plugins

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medium

medium

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medium

medium