Vulnerability Details : CVE-2020-15682

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.
Published 2020-10-22 21:15:13
Updated 2020-10-30 13:15:20
Source Mozilla Corporation
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-15682

EPSS FAQ
0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-15682

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
 NIST
6.5
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
2.8
3.6
 NIST

CWE ids for CVE-2020-15682

  • The product does not properly verify that the source of data or communication is valid.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-15682

Products affected by CVE-2020-15682

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