CVE-2021-25376 Explained : Impact and Mitigation

An improper synchronization logic in Samsung Email prior to version 6.1.41.0 can leak messages in certain mailbox in plain text when STARTTLS negotiation is failed.

Understanding CVE-2021-25376

This CVE describes a vulnerability in Samsung Email that could lead to the leakage of messages in plain text under specific conditions.

What is CVE-2021-25376?

CVE-2021-25376 highlights an issue in Samsung Email versions prior to 6.1.41.0, where improper synchronization logic could expose messages when STARTTLS negotiation fails.

The Impact of CVE-2021-25376

The vulnerability could result in the exposure of sensitive information to unauthorized actors, potentially risking user confidentiality.

Technical Details of CVE-2021-25376

This section delves into the specifics of the vulnerability affecting Samsung Email.

Vulnerability Description

The flaw involves improper synchronization logic that could inadvertently leak messages in plain text.

Affected Systems and Versions

Samsung Email versions earlier than 6.1.41.0 are affected by this vulnerability.

Exploitation Mechanism

When the STARTTLS negotiation process fails, messages in certain mailboxes could be exposed in plain text.

Mitigation and Prevention

Here, we discuss the necessary steps to mitigate the risks associated with CVE-2021-25376.

Immediate Steps to Take

Users should update Samsung Email to version 6.1.41.0 or newer to prevent message leakage.

Long-Term Security Practices

Practicing secure email communication and regular software updates can help enhance overall security.

Patching and Updates

Staying vigilant for security patches and promptly applying them is crucial in safeguarding against known vulnerabilities.