Vulnerability · Published Aug 10, 2020 · Assigned by mozilla
CVE-2020-15657
High 7.8
In plain English
A high-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 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 70.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.21 | firefox | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.22 | firefox | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.23 | firefox | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.20 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.21 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.22 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.23 | firefox-esr | 78.1.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.21 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.22 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.23 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15657 |
| Alpine:v3.24 | librewolf | 79.0-r0 | ALPINE-CVE-2020-15657 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 78.1 |
| Mozilla | Firefox | unspecified – before 79 |
| Mozilla | Thunderbird | unspecified – before 78.1 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-30/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-32/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-33/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1644954 x_refsource_MISC
- openSUSE-SU-2020:1189 vendor-advisory, x_refsource_SUSE