A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2019-04-26T16:13:22

Updated: 2024-08-05T11:08:21.996Z

Reserved: 2018-10-19T00:00:00

Link: CVE-2018-18509

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-04-26T17:29:00.243

Modified: 2019-06-03T19:29:01.390

Link: CVE-2018-18509

cve-icon Redhat

Severity : Moderate

Publid Date: 2019-02-14T00:00:00Z

Links: CVE-2018-18509 - Bugzilla