github - ghsa-92f3-r9r6-rrfr

GHSA-92F3-R9R6-RRFR

Vulnerability from github – Published: 2022-05-24 22:28 – Updated: 2022-05-24 22:28

Details

Beckhoffâ€™s TwinCAT RT network driver for Intel 8254x and 8255x is providing EtherCAT functionality. The driver implements real-time features. Except for Ethernet frames sent from real-time functionality, all other Ethernet frames sent through the driver are not padded if their payload is less than the minimum Ethernet frame size. Instead, arbitrary memory content is transmitted within in the padding bytes of the frame. Most likely this memory contains slices from previously transmitted or received frames. By this method, memory content is disclosed, however, an attacker can hardly control which memory content is affected. For example, the disclosure can be provoked with small sized ICMP echo requests sent to the device.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-12494"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-459"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-16T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Beckhoff\u00e2\u20ac\u2122s TwinCAT RT network driver for Intel 8254x and 8255x is providing EtherCAT functionality. The driver implements real-time features. Except for Ethernet frames sent from real-time functionality, all other Ethernet frames sent through the driver are not padded if their payload is less than the minimum Ethernet frame size. Instead, arbitrary memory content is transmitted within in the padding bytes of the frame. Most likely this memory contains slices from previously transmitted or received frames. By this method, memory content is disclosed, however, an attacker can hardly control which memory content is affected. For example, the disclosure can be provoked with small sized ICMP echo requests sent to the device.",
  "id": "GHSA-92f3-r9r6-rrfr",
  "modified": "2022-05-24T22:28:28Z",
  "published": "2022-05-24T22:28:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12494"
    },
    {
      "type": "WEB",
      "url": "https://cert.vde.com/en-us/advisories/vde-2020-019"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2020-12494 (GCVE-0-2020-12494)

Vulnerability from cvelistv5 – Published: 2020-06-16 13:28 – Updated: 2024-08-04 11:56

Summary

Beckhoff's TwinCAT RT network driver for Intel 8254x and 8255x is providing EtherCAT functionality. The driver implements real-time features. Except for Ethernet frames sent from real-time functionality, all other Ethernet frames sent through the driver are not padded if their payload is less than the minimum Ethernet frame size. Instead, arbitrary memory content is transmitted within in the padding bytes of the frame. Most likely this memory contains slices from previously transmitted or received frames. By this method, memory content is disclosed, however, an attacker can hardly control which memory content is affected. For example, the disclosure can be provoked with small sized ICMP echo requests sent to the device.

Severity ?

5.3 (Medium)


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

CWE

CWE-459 - Incomplete Cleanup

Assigner

CERTVDE

References

URL

Tags

https://cert.vde.com/en-us/advisories/vde-2020-019

x_refsource_CONFIRM

Impacted products

Vendor

Product

Version

Beckhoff

TwinCat Driver for Intel 8254x (Tcl8254x.sys)

Affected: unspecified , ≤ 3.1.0.3603 for TwinCAT 3.1 4024 (custom)
Affected: unspecified , ≤ 3.1.0.3512 for TwinCAT 3.1 4022 (custom)
Affected: unspecified , ≤ 2.11.0.2120 for TwinCAT 2.11 2350 (custom)

Beckhoff

TwinCat Driver for Intel 8255x (Tcl8255x.sys)

Affected: unspecified , ≤ 3.1.0.3600 for TwinCAT 3.1 4024 (custom)
Affected: unspecified , ≤ 3.1.0.3500 for TwinCAT 3.1 4024 (custom)
Affected: unspecified , ≤ 2.11.0.2117 for TwinCAT 2.11 2350 (custom)

Credits

Beckhoff reported this vulnerability to CERT@VDE

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

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

GHSA-92F3-R9R6-RRFR

CVE-2020-12494 (GCVE-0-2020-12494)

Tags

Sightings

Nomenclature