#VU50599 Use of insufficiently random values in PicoTCP and PicoTCP-NG - CVE-2020-27635
Published: February 10, 2021
Vulnerability identifier: #VU50599
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-2020-27635
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PicoTCP
PicoTCP-NG
PicoTCP
PicoTCP-NG
Software vendor:
Altran EESY
Altran EESY
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.