CVE-2020-15646

Description

If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.

5.9

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.25%

Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Thunderbird

References

Link	Tags
https://www.mozilla.org/security/advisories/mfsa2020-26/	vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1606610	vendor advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2020-15646?: CVE-2020-15646 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15646?: To fix CVE-2020-15646, 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-2020-15646 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-15646 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15646?: CVE-2020-15646 affects Mozilla Thunderbird.

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