Vulnerability · Published May 26, 2020 · Assigned by mozilla
CVE-2020-12390
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 23.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Incorrect origin serialization of URLs with IPv6 addresses could lead to incorrect security checks. This vulnerability affects Firefox < 76.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.21 | firefox | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.22 | firefox | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.23 | firefox | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.21 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.22 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.23 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12390 |
| Alpine:v3.24 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12390 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2020-16/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1141959 x_refsource_MISC