Vulnerability · Published Jun 24, 2021 · Assigned by mozilla
CVE-2021-29944
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 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)0.7%top 46.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Lack of escaping allowed HTML injection when a webpage was viewed in Reader View. While a Content Security Policy prevents direct code execution, HTML injection is still possible. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 88.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.21 | firefox | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.22 | firefox | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.23 | firefox | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.21 | librewolf | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.22 | librewolf | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.23 | librewolf | 88.0-r0 | ALPINE-CVE-2021-29944 |
| Alpine:v3.24 | librewolf | 88.0-r0 | ALPINE-CVE-2021-29944 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2021-16/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1697604 x_refsource_MISC