#VU28569 Cleartext transmission of sensitive information in Mozilla Thunderbird - CVE-2020-12398
Published: June 4, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU28569
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-12398
CWE-ID: CWE-319
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Thunderbird
Mozilla Thunderbird
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists in STARTTLS implementation for an IMAP, when the server sends a PREAUTH response. In this case Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection.
Remediation
Install updates from vendor's website.