PT-2021-17134 · Oryx Embedded · Cyclonetcp

Published 2021-03-08 · Updated 2021-04-14 · CVE-2021-26788

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Oryx Embedded CycloneTCP versions 1.7.6 through 2.0.0

Description The issue is caused by incorrect input validation, which may lead to a denial of service (DoS). An attacker with TCP connectivity to the target system can exploit this by sending a maliciously crafted TCP packet from an unauthenticated endpoint.

Recommendations For versions 1.7.6 through 2.0.0, update to version 2.0.2 to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-26788

Affected Products

Cyclonetcp

References · 4

• https://github.com/Oryx-Embedded/CycloneTCP/commit/de5336016edbe1e90327d0ed1cba5c4e49114366?branch=de5336016edbe1e90327d0ed1cba5c4e49114366&diff=split · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-26788 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26788 · Vendor Advisory
• https://t.me/cybersecuritytechnologies/3120 · Telegram Post