Vulnerability · Published May 26, 2020 · Assigned by mozilla
CVE-2020-12388
Critical 10.0
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 3.5% (higher than 89% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)10.0Critical
Exploit odds (30 days)3.5%top 10.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.21 | firefox | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.22 | firefox | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.23 | firefox | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.20 | firefox-esr | 68.8.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.21 | firefox-esr | 68.8.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.22 | firefox-esr | 68.8.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.23 | firefox-esr | 68.8.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.21 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.22 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.23 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12388 |
| Alpine:v3.24 | librewolf | 76.0-r0 | ALPINE-CVE-2020-12388 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 68.8 |
| Mozilla | Firefox | unspecified – before 76 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-16/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-17/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1618911 x_refsource_MISC
- http://packetstormsecurity.com/files/157860/Firefox-Default-Content-Process-DACL-Sandbox-Escape.html x_refsource_MISC