Freron: >> Mailmate >> 1.2 Security Vulnerabilities
MailMate before 1.11 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enabled the attacker to decipher further communication. The entire attack could be accomplished by sending a single email.
CVSS Score
5.9
EPSS Score
0.001
Published
2020-08-20
MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email.
CVSS Score
7.5
EPSS Score
0.005
Published
2019-02-11