SB20200611146 - Cleartext transmission of sensitive information in thunderbird (Alpine package)
Published: June 11, 2020
Security Bulletin ID
SB20200611146
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cleartext transmission of sensitive information (CVE-ID: CVE-2020-12398)
CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information
CVSSv4: 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
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 update from vendor's website.