CVE-2020-24661
Medium
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 PKCS#11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Gnome Geary
PublishedAug 26, 2020
First seenAug 26, 2020
How to fix
Update
- gnome geary3.36.3 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7OTYTGND6EFOKNQJWCHKKXKSN7SM73Y/
- tools.cisco.com/security/center/content/CiscoSeg/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnome geary | v < 3.36.3 | 3.36.3 |
| fedoraproject fedora | 31, 32 | — |
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