CVE-2020-12494

Katalog CVE

CVSS 5.3 · Medium EPSS 1,0%

Kerentanan Incomplete Cleanup pada beckhoff twincat driver, beckhoff twincat. Skor CVSS 3.1 5.3 (Medium) menurut cert.vde.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

16 Juni 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.3 (Medium), sumber cert.vde.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-459: Incomplete Cleanup

EPSS (30 hari)

1,0% peluang dieksploitasi; lebih tinggi dari 62,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cert.vde.com/en-us/advisories/vde-2020-019 advisory pihak ketiga