Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2020-10063
CVE-2020-10063:
NixOS vulnerability analysis and mitigation
Overview
A remote adversary with the ability to send arbitrary CoAP (Constrained Application Protocol) packets to be parsed by Zephyr is able to cause a denial of service. This vulnerability affects Zephyr RTOS version 2.2.0 and later versions, and is tracked as CVE-2020-10063 (CVE Details).
Technical details
The vulnerability is caused by an integer overflow condition in the CoAP packet parsing functionality. The issue occurs when processing CoAP packets with specific malformed data that can trigger the integer overflow (Zephyr PR). The vulnerability is classified as CWE-190 (Integer Overflow or Wraparound) (NVD CNA).
Impact
When successfully exploited, this vulnerability can result in a denial of service condition in the affected Zephyr RTOS system. The impact is limited to availability, as the integer overflow in CoAP packet parsing causes the system to become unresponsive (Zephyr Docs).
Mitigation and workarounds
The vulnerability has been fixed in multiple versions of Zephyr RTOS through a series of patches. Fixes were backported to various branches: v1.14 (PR 24530), v2.1 (PR 24535), and v2.2 (PR 24531). Users are advised to update to the patched versions.
Additional resources
Source: This report was generated using AI
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