Vulnerability · Published Apr 24, 2020 · Assigned by mozilla
CVE-2020-6823
Critical 9.8
In plain English
A critical-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.6%top 24.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.21 | firefox | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.22 | firefox | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.23 | firefox | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.21 | librewolf | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.22 | librewolf | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.23 | librewolf | 75.0-r0 | ALPINE-CVE-2020-6823 |
| Alpine:v3.24 | librewolf | 75.0-r0 | ALPINE-CVE-2020-6823 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2020-12/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1614919 x_refsource_MISC