Vulnerability-Lookup

CVE-2021-45450 (GCVE-0-2021-45450)

Vulnerability from cvelistv5 – Published: 2021-12-21 00:00 – Updated: 2024-08-04 04:39

Summary

In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.

Severity

7.5 (High)


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

CWE

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202301-08	vendor-advisory

Show details on NVD website

JSON

To clipboard

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      "product_status:recommended": "7",
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      "title": "SUSE CVE CVE-2021-45450",
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}

FKIE_CVE-2021-45450

Vulnerability from fkie_nvd - Published: 2021-12-21 07:15 - Updated: 2026-06-17 04:13

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

URL	Tags
cve@mitre.org	https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0	Release Notes, Third Party Advisory
cve@mitre.org	https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0	Release Notes, Third Party Advisory
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/	Mailing List
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/	Mailing List
cve@mitre.org	https://security.gentoo.org/glsa/202301-08	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0	Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0	Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/	Mailing List
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/	Mailing List
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/202301-08	Third Party Advisory

Impacted products

Vendor	Product	Version
trustedfirmware	mbed_tls	*
trustedfirmware	mbed_tls	3.0.0
fedoraproject	fedora	36
fedoraproject	fedora	37

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2559E738-C387-44EA-9928-EEDE0C063B7C",
              "versionEndExcluding": "2.28.0",
              "versionStartIncluding": "2.22.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:trustedfirmware:mbed_tls:3.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "8C47F227-37B2-410C-969A-F9546CFE079D",
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          ],
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          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application."
    },
    {
      "lang": "es",
      "value": "En Mbed TLS versiones anteriores a 2.28.0 y 3.x versiones anteriores a 3.1.0, las funciones psa_cipher_generate_iv y psa_cipher_encrypt permiten omitir la pol\u00edtica o el descifrado basado en or\u00e1culos cuando el b\u00fafer de salida es encontrado en ubicaciones de memoria accesibles para una aplicaci\u00f3n no confiable"
    }
  ],
  "id": "CVE-2021-45450",
  "lastModified": "2026-06-17T04:13:23.583",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
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          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
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          "version": "2.0"
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        "impactScore": 2.9,
        "obtainAllPrivilege": false,
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        "type": "Primary",
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      }
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          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-12-21T07:15:06.727",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0"
    },
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      "source": "cve@mitre.org",
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      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/"
    },
    {
      "source": "cve@mitre.org",
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        "Mailing List"
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/202301-08"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
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      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/202301-08"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-97VF-2GX4-2RFM

Vulnerability from github – Published: 2021-12-22 00:00 – Updated: 2026-06-05 21:31

Details

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-45450"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-327"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-21T07:15:00Z",
    "severity": "HIGH"
  },
  "details": "In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.",
  "id": "GHSA-97vf-2gx4-2rfm",
  "modified": "2026-06-05T21:31:50Z",
  "published": "2021-12-22T00:00:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45450"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202301-08"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-45450

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-45450

Aliases

CVE-2021-45450

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-45450",
    "description": "In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.",
    "id": "GSD-2021-45450",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-45450.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-45450"
      ],
      "details": "In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.",
      "id": "GSD-2021-45450",
      "modified": "2023-12-13T01:23:19.435690Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-45450",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
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              "product": {
                "product_data": [
                  {
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                        }
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          },
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/"
          },
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    "nvd.nist.gov": {
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            "baseScore": 5.0,
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            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
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          "impactScore": 2.9,
          "obtainAllPrivilege": false,
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          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-11-21T16:29Z",
      "publishedDate": "2021-12-21T07:15Z"
    }
  }
}

OPENSUSE-SU-2024:11752-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

libmbedcrypto7-2.28.0-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2021-45450.

CVE-2021-45450

7.5 (High)


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

Recommended: 28 products

Open the full advisory

OPENSUSE-SU-2026:11119-1

Vulnerability from csaf_opensuse - Published: 2026-06-25 00:00 - Updated: 2026-09-17 17:11

Summary

libeverest-3.6.6-1.1 on GA media

Severity

Moderate

Scope

14 vulnerabilities in this advisory, including CVE-2021-45450.

CVE-2021-45450

7.5 (High)


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

Recommended: 44 products

Open the full advisory

UBUNTU-CVE-2021-45450 (CVE-2021-45450)

Vulnerability from osv_ubuntu – Published: 2021-12-21 07:15 – Updated: 2026-04-22 07:40 – Source website

Details

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-45450	REPORT
	https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0	REPORT
	https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-45450	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmbedcrypto0",
            "binary_version": "2.2.1-2ubuntu0.3"
          },
          {
            "binary_name": "libmbedtls10",
            "binary_version": "2.2.1-2ubuntu0.3"
          },
          {
            "binary_name": "libmbedx509-0",
            "binary_version": "2.2.1-2ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "mbedtls",
        "purl": "pkg:deb/ubuntu/mbedtls@2.2.1-2ubuntu0.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2-1",
        "2.2.0-1",
        "2.2.1-1",
        "2.2.1-2",
        "2.2.1-2ubuntu0.1",
        "2.2.1-2ubuntu0.2",
        "2.2.1-2ubuntu0.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmbedcrypto1",
            "binary_version": "2.8.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libmbedtls10",
            "binary_version": "2.8.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libmbedx509-0",
            "binary_version": "2.8.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mbedtls",
        "purl": "pkg:deb/ubuntu/mbedtls@2.8.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
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            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.1-1ubuntu1",
        "2.6.0-1",
        "2.7.0-2",
        "2.8.0-1",
        "2.8.0-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmbedcrypto3",
            "binary_version": "2.16.4-1ubuntu2+esm1"
          },
          {
            "binary_name": "libmbedtls12",
            "binary_version": "2.16.4-1ubuntu2+esm1"
          },
          {
            "binary_name": "libmbedx509-0",
            "binary_version": "2.16.4-1ubuntu2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "mbedtls",
        "purl": "pkg:deb/ubuntu/mbedtls@2.16.4-1ubuntu2+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.16.2-1",
        "2.16.3-1",
        "2.16.4-1ubuntu2",
        "2.16.4-1ubuntu2+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.",
  "id": "UBUNTU-CVE-2021-45450",
  "modified": "2026-04-22T07:40:12Z",
  "published": "2021-12-21T07:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-45450"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-45450"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-45450"
  ]
}

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.

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

CVE-2021-45450 (GCVE-0-2021-45450)

FKIE_CVE-2021-45450

GHSA-97VF-2GX4-2RFM

GSD-2021-45450

OPENSUSE-SU-2024:11752-1

OPENSUSE-SU-2026:11119-1

UBUNTU-CVE-2021-45450 (CVE-2021-45450)

Tags

Sightings

Nomenclature

Related by attack behaviour