CVE-2020-6823
First published: Tue Apr 07 2020(Updated: )
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.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox | <75 | 75 |
| Mozilla Firefox | <75.0 | |
| debian/firefox | 133.0.3-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1614919
- https://www.mozilla.org/security/advisories/mfsa2020-12/
- https://launchpad.net/bugs/cve/CVE-2020-6823
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6826
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6823
- https://nvd.nist.gov/vuln/detail/CVE-2020-6823
- https://security-tracker.debian.org/tracker/CVE-2020-6823
- https://ubuntu.com/security/CVE-2020-6823
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6823
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-6823.
What is the severity level of CVE-2020-6823?
The severity level of CVE-2020-6823 is critical with a score of 9.8.
Which software is affected by CVE-2020-6823?
The software affected by CVE-2020-6823 is Mozilla Firefox versions before 75.
How can this vulnerability be exploited?
A malicious extension could call browser.identity.launchWebAuthFlow, controlling the redirect_uri to obtain the Auth code and gain access to the user's account at the service provider.
Is there a fix available for CVE-2020-6823?
Yes, updating to Mozilla Firefox version 75 or above will fix the vulnerability.
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