#VU29487 Man-in-the-Middle (MitM) attack in PuTTY - CVE-2020-14002

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Main Vulnerability Database Vulnerabilities #VU29487

#VU29487 Man-in-the-Middle (MitM) attack in PuTTY - CVE-2020-14002

Published: July 2, 2020


Vulnerability identifier: #VU29487
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-14002
CWE-ID: CWE-300
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
PuTTY
Software vendor:
Simon Tatham

Description

The vulnerability allows a remote attacker to perform a Man-in-the-Middle (MitM) attack.

The vulnerability exists due to an observable discrepancy issue in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).


Remediation

Install updates from vendor's website.

External links