CVE-2020-24661 Information

Description

GNOME Geary before 3.36.3 mishandles pinned TLS certificate verification for IMAP and SMTP services using invalid TLS certificates (e.g. self-signed certificates) when the client system is not configured to use a system-provided PKCS11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://gitlab.gnome.org/GNOME/geary/-/issues/866 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G7OTYTGND6EFOKNQJWCHKKXKSN7SM73Y/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9