CVE Vulnerabilities

CVE-2018-18509

Improper Verification of Cryptographic Signature

Published: Apr 26, 2019 | Modified: Jun 03, 2019
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

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 arent 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.

Weakness

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Software

Name Vendor Start Version End Version
Thunderbird Mozilla * *

References