CVE-2020-12494: Beckhoff: Etherleak in TwinCAT RT network driver
Beckhoff · TwinCat Driver for Intel 8254x (Tcl8254x.sys)
Affected: Beckhoff TwinCat Driver for Intel 8254x (Tcl8254x.sys) · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 63% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Beckhoff · TwinCat Driver for Intel 8254x (Tcl8254x.sys)up to and including 3.1.0.3603 for TwinCAT 3.1 4024; up to and including 3.1.0.3512 for TwinCAT 3.1 4022; up to and including 2.11.0.2120 for TwinCAT 2.11 2350
- Beckhoff · TwinCat Driver for Intel 8255x (Tcl8255x.sys)up to and including 3.1.0.3600 for TwinCAT 3.1 4024; up to and including 3.1.0.3500 for TwinCAT 3.1 4024; up to and including 2.11.0.2117 for TwinCAT 2.11 2350
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2020-12494 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.