Vulnerability · Published Dec 8, 2021 · Assigned by mozilla
CVE-2021-38510
High 8.8
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 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.0%top 36.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The executable file warning was not presented when downloading .inetloc files, which, due to a flaw in Mac OS, can run commands on a user's computer.*Note: This issue only affected Mac OS operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.21 | firefox | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.22 | firefox | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.23 | firefox | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.20 | firefox-esr | 91.3.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.21 | firefox-esr | 91.3.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.22 | firefox-esr | 91.3.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.23 | firefox-esr | 91.3.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.21 | librewolf | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.22 | librewolf | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.23 | librewolf | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.24 | librewolf | 94.0-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.20 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.21 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.22 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-38510 |
| Alpine:v3.23 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-38510 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2021-38510 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 94 |
| Mozilla | Thunderbird | unspecified – before 91.3 |
| Mozilla | Firefox ESR | unspecified – before 91.3 |
References
- https://www.mozilla.org/security/advisories/mfsa2021-49/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-50/ x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-48/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1731779 x_refsource_MISC