Vulnerability · Published Dec 8, 2021 · Assigned by mozilla
CVE-2021-43544
Medium 6.1
In plain English
A medium-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 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)0.5%top 55.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.21 | firefox | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.22 | firefox | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.23 | firefox | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.21 | librewolf | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.22 | librewolf | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.23 | librewolf | 95.0-r0 | ALPINE-CVE-2021-43544 |
| Alpine:v3.24 | librewolf | 95.0-r0 | ALPINE-CVE-2021-43544 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2021-52/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1739934 x_refsource_MISC