CVE-2020-24661

Public Exploit

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.25%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory cisco.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://gitlab.gnome.org/GNOME/geary/-/issues/866 third party advisory issue tracking exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7OTYTGND6EFOKNQJWCHKKXKSN7SM73Y/ vendor advisory
https://tools.cisco.com/security/center/content/CiscoSeg/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/ vendor advisory broken link

Frequently Asked Questions

What is the severity of CVE-2020-24661?
CVE-2020-24661 has been scored as a medium severity vulnerability.
How to fix CVE-2020-24661?
To fix CVE-2020-24661, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-24661 being actively exploited in the wild?
It is possible that CVE-2020-24661 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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