Vulnerability-Lookup

RHSA-2023:6685

Vulnerability from csaf_opensuse - Published: 2023-11-07 00:00 - Updated: 2026-09-20 11:33

Summary

security update for tpm2-tss

Severity

Low

Notes

Title of the patch: security update for tpm2-tss

Description of the patch: This security update provides a functional equivalent of RHSA-2023:6685. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2023:6685.

Patchnames: RHSA-2023:6685

CVE-2023-22745

6.4 (Medium)


                
                  CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 9:tpm2-tss-0:3.2.2-2.el9.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:tpm2-tss-0:3.2.2-2.el9.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:tpm2-tss-devel-0:3.2.2-2.el9.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:tpm2-tss-devel-0:3.2.2-2.el9.x86_64	—	Vendor Fix

Threats

Impact moderate

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2023-22745/	self
https://www.suse.com/security/cve/CVE-2023-22745	external
https://bugzilla.suse.com/1207325	external

JSON

To clipboard

{
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  "vulnerabilities": [
    {
      "cve": "CVE-2023-22745",
      "ids": [
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          "text": "https://www.suse.com/security/cve/CVE-2023-22745"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In versions prior to 4.1.0-rc0, 4.0.1, and 3.2.2-rc1, `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. Versions 4.1.0-rc0, 4.0.1, and 3.2.2-rc1 fix the issue.",
          "title": "CVE description"
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          "url": "https://bugzilla.suse.com/1207325"
        }
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      "remediations": [
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 9:tpm2-tss-0:3.2.2-2.el9.i686",
            "SUSE Liberty Linux 9:tpm2-tss-0:3.2.2-2.el9.x86_64",
            "SUSE Liberty Linux 9:tpm2-tss-devel-0:3.2.2-2.el9.i686",
            "SUSE Liberty Linux 9:tpm2-tss-devel-0:3.2.2-2.el9.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2023-11-07T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-22745"
    }
  ]
}

CVE-2023-22745 (GCVE-0-2023-22745)

Vulnerability from cvelistv5 – Published: 2023-01-19 22:12 – Updated: 2025-11-21 19:10

Title

Buffer Overlow in TSS2_RC_Decode in tpm2-tss

Summary

tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In versions prior to 4.1.0-rc0, 4.0.1, and 3.2.2-rc1, `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. Versions 4.1.0-rc0, 4.0.1, and 3.2.2-rc1 fix the issue.

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 21:01 UTC

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/tpm2-software/tpm2-tss/securit…	x_refsource_CONFIRM
https://github.com/tpm2-software/tpm2-tss/commit/…	x_refsource_MISC
https://github.com/tpm2-software/tpm2-tss/commit/…	x_refsource_MISC
https://github.com/tpm2-software/tpm2-tss/commit/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tpm2-software	tpm2-tss	Affected: < 4.0.1 Affected: < 3.2.2-rc0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T10:20:30.190Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67"
          },
          {
            "name": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-22745",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-10T21:01:10.360058Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-10T21:21:37.784Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tpm2-tss",
          "vendor": "tpm2-software",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.0.1"
            },
            {
              "status": "affected",
              "version": "\u003c 3.2.2-rc0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In versions prior to 4.1.0-rc0, 4.0.1, and 3.2.2-rc1, `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. Versions 4.1.0-rc0, 4.0.1, and 3.2.2-rc1 fix the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2025-11-21T19:10:18.693Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67"
        },
        {
          "name": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5"
        },
        {
          "name": "https://github.com/tpm2-software/tpm2-tss/commit/49107d65d5c7be430671398416bbd89dae4e34e7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/49107d65d5c7be430671398416bbd89dae4e34e7"
        },
        {
          "name": "https://github.com/tpm2-software/tpm2-tss/commit/7ab42953216adec046d000a5e3085f3ee5e9cabf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/7ab42953216adec046d000a5e3085f3ee5e9cabf"
        }
      ],
      "source": {
        "advisory": "GHSA-4j3v-fh23-vx67",
        "discovery": "UNKNOWN"
      },
      "title": "Buffer Overlow in TSS2_RC_Decode in tpm2-tss"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-22745",
    "datePublished": "2023-01-19T22:12:40.208Z",
    "dateReserved": "2023-01-06T14:21:05.893Z",
    "dateUpdated": "2025-11-21T19:10:18.693Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2023:6685

CVE-2023-22745 (GCVE-0-2023-22745)

Tags

Sightings

Nomenclature

Related by attack behaviour