Vulnerability-Lookup

RHSA-2022:8100

Vulnerability from csaf_redhat - Published: 2022-11-15 10:34 - Updated: 2025-11-21 18:34

Summary

Red Hat Security Advisory: swtpm security and bug fix update

Severity

Low

Notes

Topic: An update for swtpm is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: SWTPM is a TPM emulator built on libtpms providing TPM functionality for QEMU VMs. Security Fix(es): * swtpm: Unchecked header size indicator against expected size (CVE-2022-23645) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes linked from the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2022-23645

An out-of-bounds read vulnerability was found in swtpm. The vulnerability exists due to a boundary condition when the byte array representing the state of the TPM is accessed. This flaw allows an attacker to send a specially crafted header, triggering an out-of-bounds read access on the byte array containing the TPM's state. This issue can crash swtpm or prevent it from starting.

5.5 (Medium)


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

CWE-125 - Out-of-bounds Read

Affected products

Fixed 22 products

Product	Version	Remediation
Unresolved product id: AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debugsource-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debugsource-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-debugsource-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-libs-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.1.0.GA:swtpm-tools-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Low

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2022:8100	self
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/documentation/en-us/red…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2056491	external
https://bugzilla.redhat.com/show_bug.cgi?id=2090219	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2022-23645	self
https://bugzilla.redhat.com/show_bug.cgi?id=2056491	external
https://www.cve.org/CVERecord?id=CVE-2022-23645	external
https://nvd.nist.gov/vuln/detail/CVE-2022-23645	external

JSON

To clipboard

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          "text": "swtpm: Unchecked header size indicator against expected size",
          "title": "Vulnerability summary"
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          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2022:8100"
        },
        {
          "category": "workaround",
          "details": "No possible workarounds. Users should upgrade to swtpm v0.5.3, v0.6.2 or v0.7.1.",
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            "AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.x86_64",
            "AppStream-9.1.0.GA:swtpm-debuginfo-0:0.7.0-3.20211109gitb79fd91.el9.aarch64",
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        }
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.aarch64",
            "AppStream-9.1.0.GA:swtpm-0:0.7.0-3.20211109gitb79fd91.el9.s390x",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "swtpm: Unchecked header size indicator against expected size"
    }
  ]
}

CVE-2022-23645 (GCVE-0-2022-23645)

Vulnerability from cvelistv5 – Published: 2022-02-18 20:50 – Updated: 2025-04-23 19:02

Title

Out-of-bounds read in swtpm

Summary

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 ?

6.2 (Medium)


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

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M

References

6 references

URL	Tags
https://github.com/stefanberger/swtpm/security/ad…	x_refsource_CONFIRM
https://github.com/stefanberger/swtpm/commit/9f74…	x_refsource_MISC
https://github.com/stefanberger/swtpm/releases/ta…	x_refsource_MISC
https://github.com/stefanberger/swtpm/releases/ta…	x_refsource_MISC
https://github.com/stefanberger/swtpm/releases/ta…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Impacted products

1 product

Vendor	Product	Version
stefanberger	swtpm	Affected: < 0.5.3 Affected: >= 0.6.0, < 0.6.2 Affected: = 0.7.0

Show details on NVD website

JSON

To clipboard

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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.

Action not permitted

RHSA-2022:8100

CVE-2022-23645 (GCVE-0-2022-23645)

Tags

Sightings

Nomenclature