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mbedtls — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2022-46392

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.

Products
mbedtls
Affected versions
Not specified
Fixed versions
2.28.2-1
CVEs
CVE-2022-46392
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 15:02 UTC · Revision 1

Source evidence

DEBIAN-CVE-2022-46392

core-osv · Original source

Published 15 Dec 2022, 23:15 UTC

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.

osv:DEBIAN-CVE-2022-46392

mbedtls

Fixed versions: 2.28.2-1

mbedtls

Fixed versions: 2.28.2-1

mbedtls

Fixed versions: 2.28.2-1

Complete source record
{
  "id": "af32aa164dbc90512f4c6d6781d9817ababfc45e48f646ec2da8ac2b8aea09ba",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-46392",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2022-46392",
    "summary": "An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.",
    "evidence": "osv:DEBIAN-CVE-2022-46392",
    "products": [
      {
        "name": {
          "value": "mbedtls",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.28.2-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "mbedtls",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.28.2-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "mbedtls",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.28.2-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2022-46392",
      "aliases": [
        "DEBIAN-CVE-2022-46392"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.28.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "mbedtls",
            "purl": "pkg:deb/debian/mbedtls?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.28.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "mbedtls",
            "purl": "pkg:deb/debian/mbedtls?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.28.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "mbedtls",
            "purl": "pkg:deb/debian/mbedtls?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-15T08:02:46.186441498Z",
      "provider": "osv",
      "upstream": [
        "CVE-2022-46392"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2022-46392"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2022-46392",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 324185,
  "published_at": "2022-12-15T23:15:10.513+00:00"
}