CVE-2020-6823 — CRITICAL (9.8)

Vulnerability Description

A malicious extension could have called <code>browser.identity.launchWebAuthFlow</code>, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mozilla	Firefox	< 75.0

Related Weaknesses (CWE)

CWE-862

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1614919Issue TrackingVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-12/Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1614919Issue TrackingVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-12/Third Party Advisory

FAQ

What is CVE-2020-6823?

CVE-2020-6823 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A malicious extension could have called <code>browser.identity.launchWebAuthFlow</code>, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the use...

How severe is CVE-2020-6823?

CVE-2020-6823 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2020-6823?

Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.