CVE-2019-11739

Description

Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.27%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1571481 issue tracking permissions required vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-29/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-30/ vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html vendor advisory
https://usn.ubuntu.com/4150-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11739?
CVE-2019-11739 has been scored as a medium severity vulnerability.
How to fix CVE-2019-11739?
To fix CVE-2019-11739, 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-2019-11739 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11739 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-2019-11739?
CVE-2019-11739 affects Mozilla Thunderbird.
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