CVE-2021-20988: Hilscher rcX RTOS: Wrong handling of the UDP checksum
First published: Mon Feb 15 2021(Updated: )
In Hilscher rcX RTOS versions prios to V2.1.14.1 the actual UDP packet length is not verified against the length indicated by the packet. This may lead to a denial of service of the affected device.
Credit: info@cert.vde.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Hilscher rcX RTOS | <2.1.14.1 | |
| Pepperl-fuchs Ice1-16di-g60l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-16di-g60l-v1d | ||
| Pepperl-fuchs Ice1-16dio-g60l-c1-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-16dio-g60l-c1-v1d | ||
| Pepperl-fuchs Ice1-16dio-g60l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-16dio-g60l-v1d | ||
| Pepperl-fuchs Ice1-8di8do-g60l-c1-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-8di8do-g60l-c1-v1d | ||
| Pepperl-fuchs Ice1-8di8do-g60l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-8di8do-g60l-v1d | ||
| Pepperl-fuchs Ice1-8iol-g30l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-8iol-g30l-v1d | ||
| Pepperl-fuchs Ice1-8iol-g60l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-8iol-g60l-v1d | ||
| Pepperl-fuchs Ice1-8iol-s2-g60l-v1d Firmware | <=f10017 | |
| Pepperl-fuchs Ice1-8iol-s2-g60l-v1d |
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Reference Links
Frequently Asked Questions
What is CVE-2021-20988?
CVE-2021-20988 is a vulnerability in Hilscher rcX RTOS versions prior to V2.1.14.1 that allows for a denial of service attack.
How severe is CVE-2021-20988?
CVE-2021-20988 has a severity rating of 7.5 (High).
Which software versions are affected by CVE-2021-20988?
Hilscher rcX RTOS versions up to and excluding V2.1.14.1 are affected by CVE-2021-20988.
How can I fix CVE-2021-20988?
To fix CVE-2021-20988, update your Hilscher rcX RTOS to version V2.1.14.1 or higher.
Where can I find more information about CVE-2021-20988?
You can find more information about CVE-2021-20988 at the following references: [link 1](https://cert.vde.com/de-de/advisories/vde-2021-018) and [link 2](https://kb.hilscher.com/display/ISMS/2019-04-10+Wrong+handling+of+the+UDP+checksum).
- collector/nvd-index
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/severity
- agent/title
- agent/author
- agent/tags
- agent/event
- agent/description
- agent/first-publish-date
- vendor/hilscher
- canonical/hilscher rcx rtos
- vendor/pepperl-fuchs
- canonical/pepperl-fuchs ice1-16di-g60l-v1d firmware
- version/pepperl-fuchs ice1-16di-g60l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-16di-g60l-v1d
- canonical/pepperl-fuchs ice1-16dio-g60l-c1-v1d firmware
- version/pepperl-fuchs ice1-16dio-g60l-c1-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-16dio-g60l-c1-v1d
- canonical/pepperl-fuchs ice1-16dio-g60l-v1d firmware
- version/pepperl-fuchs ice1-16dio-g60l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-16dio-g60l-v1d
- canonical/pepperl-fuchs ice1-8di8do-g60l-c1-v1d firmware
- version/pepperl-fuchs ice1-8di8do-g60l-c1-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-8di8do-g60l-c1-v1d
- canonical/pepperl-fuchs ice1-8di8do-g60l-v1d firmware
- version/pepperl-fuchs ice1-8di8do-g60l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-8di8do-g60l-v1d
- canonical/pepperl-fuchs ice1-8iol-g30l-v1d firmware
- version/pepperl-fuchs ice1-8iol-g30l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-8iol-g30l-v1d
- canonical/pepperl-fuchs ice1-8iol-g60l-v1d firmware
- version/pepperl-fuchs ice1-8iol-g60l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-8iol-g60l-v1d
- canonical/pepperl-fuchs ice1-8iol-s2-g60l-v1d firmware
- version/pepperl-fuchs ice1-8iol-s2-g60l-v1d firmware/f10017
- canonical/pepperl-fuchs ice1-8iol-s2-g60l-v1d