CVE-2020-15682

Description

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-45/ release notes vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1636654 vendor advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2020-15682?
CVE-2020-15682 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15682?
To fix CVE-2020-15682, 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-2020-15682 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15682 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-2020-15682?
CVE-2020-15682 affects Mozilla Firefox.
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