Vulnerability Details : CVE-2021-23971
When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.
Products affected by CVE-2021-23971
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-23971
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23971
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
References for CVE-2021-23971
-
https://security.gentoo.org/glsa/202104-10
Mozilla Firefox: Multiple vulnerabilities (GLSA 202104-10) — Gentoo securityThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-07/
Security Vulnerabilities fixed in Firefox 86 — MozillaRelease Notes;Vendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1678545
Access DeniedIssue Tracking;Permissions Required;Vendor Advisory
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