ubuntu-cve-2022-23645
Vulnerability from osv_ubuntu
Published
2022-02-18 21:15
Modified
2025-07-16 05:01
Summary
Details

swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "swtpm",
            "binary_version": "0.6.3-0ubuntu3"
          },
          {
            "binary_name": "swtpm-dbgsym",
            "binary_version": "0.6.3-0ubuntu3"
          },
          {
            "binary_name": "swtpm-tools",
            "binary_version": "0.6.3-0ubuntu3"
          },
          {
            "binary_name": "swtpm-tools-dbgsym",
            "binary_version": "0.6.3-0ubuntu3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "swtpm",
        "purl": "pkg:deb/ubuntu/swtpm@0.6.3-0ubuntu3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.3-0ubuntu3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.1-0ubuntu1",
        "0.6.1-0ubuntu2",
        "0.6.1-0ubuntu3",
        "0.6.1-0ubuntu4",
        "0.6.1-0ubuntu5",
        "0.6.3-0ubuntu1",
        "0.6.3-0ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm\u0027s state, where the blobheader\u0027s hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.",
  "id": "UBUNTU-CVE-2022-23645",
  "modified": "2025-07-16T05:01:11Z",
  "published": "2022-02-18T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-23645"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqw"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stefanberger/swtpm/releases/tag/v0.5.3"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stefanberger/swtpm/releases/tag/v0.6.2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stefanberger/swtpm/releases/tag/v0.7.1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-23645"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-23645"
  ],
  "withdrawn": "2025-07-18T16:49:16Z"
}



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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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