#VU50595 Use of insufficiently random values in CycloneTCP - CVE-2020-27631

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Main Vulnerability Database Vulnerabilities #VU50595

#VU50595 Use of insufficiently random values in CycloneTCP - CVE-2020-27631

Published: February 10, 2021


Vulnerability identifier: #VU50595
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-27631
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
CycloneTCP
Software vendor:
Oryx Embedded

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the ISN generator relies on LCG, which is reversible from observed output streams. A remote attacker can interfere with traffic, spoof the connection and gain access to sensitive information.


Remediation

Install updates from vendor's website.

External links