CVE-2025-49133 (GCVE-0-2025-49133)

Vulnerability from cvelistv5 – Published: 2025-06-10 19:46 – Updated: 2025-11-03 20:05
VLAI
Title
Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue
Summary
Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the ‘CryptHmacSign’ function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the ‘CryptHmacSign’ function, which is defined in the "Part 4: Supporting Routines – Code" document, section "7.151 - /tpm/src/crypt/CryptUtil.c ". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.
Severity
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
stefanberger libtpms Affected: = 0.7.11
Affected: = 0.8.9
Affected: = 0.9.6
Affected: = 0.10.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-49133",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-10T20:00:47.887183Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-10T20:01:40.310Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:05:08.172Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/282450"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libtpms",
          "vendor": "stefanberger",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.7.11"
            },
            {
              "status": "affected",
              "version": "= 0.8.9"
            },
            {
              "status": "affected",
              "version": "= 0.9.6"
            },
            {
              "status": "affected",
              "version": "= 0.10.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \"Part 4: Supporting Routines \u2013 Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-10T19:46:27.397Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g"
        },
        {
          "name": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1"
        },
        {
          "name": "https://trustedcomputinggroup.org/resource/tpm-library-specification",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://trustedcomputinggroup.org/resource/tpm-library-specification"
        },
        {
          "name": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf"
        }
      ],
      "source": {
        "advisory": "GHSA-25w5-6fjj-hf8g",
        "discovery": "UNKNOWN"
      },
      "title": "Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-49133",
    "datePublished": "2025-06-10T19:46:27.397Z",
    "dateReserved": "2025-06-02T10:39:41.633Z",
    "dateUpdated": "2025-11-03T20:05:08.172Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-49133",
      "date": "2026-05-26",
      "epss": "0.00096",
      "percentile": "0.26288"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-49133\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-06-10T20:15:24.337\",\"lastModified\":\"2025-11-03T20:19:08.363\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \\\"Part 4: Supporting Routines \u2013 Code\\\" document, section \\\"7.151 - /tpm/src/crypt/CryptUtil.c \\\". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.\"},{\"lang\":\"es\",\"value\":\"Libtpms es una librer\u00eda que integra la funcionalidad TPM en hipervisores, principalmente en Qemu. Libtpms, derivada del c\u00f3digo de implementaci\u00f3n de referencia de TPM 2.0 publicado por Trusted Computing Group, es propensa a una posible vulnerabilidad de lectura fuera de los l\u00edmites (OOB). La vulnerabilidad se produce en la funci\u00f3n \u0027CryptHmacSign\u0027 con una combinaci\u00f3n inconsistente de los par\u00e1metros signKey y signScheme, donde signKey es la clave ALG_KEYEDHASH e inScheme es un esquema ECC o RSA. La vulnerabilidad reportada se encuentra en la funci\u00f3n \u0027CryptHmacSign\u0027, definida en el documento \\\"Parte 4: Rutinas de Soporte - C\u00f3digo\\\", secci\u00f3n \\\"7.151 - /tpm/src/crypt/CryptUtil.c\\\". Esta vulnerabilidad puede activarse desde aplicaciones en modo usuario mediante el env\u00edo de comandos maliciosos a un TPM 2.0/vTPM (swtpm) cuyo firmware se basa en una implementaci\u00f3n de referencia de TCG afectada. El efecto en libtpms es que provocar\u00e1 una interrupci\u00f3n debido a la detecci\u00f3n de un acceso fuera de los l\u00edmites, lo que, por ejemplo, har\u00e1 que un vTPM (swtpm) no est\u00e9 disponible para una m\u00e1quina virtual. Esta vulnerabilidad est\u00e1 corregida en las versiones 0.7.12, 0.8.10, 0.9.7 y 0.10.1.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.5,\"impactScore\":4.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libtpms_project:libtpms:0.7.11:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6694670F-F730-4D4E-BABA-E7DD9590C427\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libtpms_project:libtpms:0.8.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C9364766-F471-4129-B95D-2B81827BD8D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libtpms_project:libtpms:0.9.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0B72018-66F3-4E3C-A52C-640B8115C535\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libtpms_project:libtpms:0.10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6BE30A5E-F67D-4625-A9C2-19DD3BF80F29\"}]}]}],\"references\":[{\"url\":\"https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://trustedcomputinggroup.org/resource/tpm-library-specification\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://www.kb.cert.org/vuls/id/282450\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.kb.cert.org/vuls/id/282450\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:05:08.172Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-49133\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-06-10T20:00:47.887183Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-06-10T20:00:51.713Z\"}}], \"cna\": {\"title\": \"Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue\", \"source\": {\"advisory\": \"GHSA-25w5-6fjj-hf8g\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"stefanberger\", \"product\": \"libtpms\", \"versions\": [{\"status\": \"affected\", \"version\": \"= 0.7.11\"}, {\"status\": \"affected\", \"version\": \"= 0.8.9\"}, {\"status\": \"affected\", \"version\": \"= 0.9.6\"}, {\"status\": \"affected\", \"version\": \"= 0.10.0\"}]}], \"references\": [{\"url\": \"https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g\", \"name\": \"https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1\", \"name\": \"https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://trustedcomputinggroup.org/resource/tpm-library-specification\", \"name\": \"https://trustedcomputinggroup.org/resource/tpm-library-specification\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf\", \"name\": \"https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \\u2018CryptHmacSign\\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \\u2018CryptHmacSign\\u2019 function, which is defined in the \\\"Part 4: Supporting Routines \\u2013 Code\\\" document, section \\\"7.151 - /tpm/src/crypt/CryptUtil.c \\\". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125: Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-06-10T19:46:27.397Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-49133\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:05:08.172Z\", \"dateReserved\": \"2025-06-02T10:39:41.633Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-06-10T19:46:27.397Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Detection rules are retrieved from Rulezet.