Vulnerability · Published Aug 17, 2021 · Assigned by mozilla
CVE-2021-29983
Medium 6.5
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 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.7%top 45.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Firefox for Android could get stuck in fullscreen mode and not exit it even after normal interactions that should cause it to exit. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.21 | firefox | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.22 | firefox | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.23 | firefox | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.21 | librewolf | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.22 | librewolf | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.23 | librewolf | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Alpine:v3.24 | librewolf | 92.0.1-r0 | ALPINE-CVE-2021-29983 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2021-29983 |
Affected products (as reported)
References
- https://www.mozilla.org/security/advisories/mfsa2021-33/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1719088 x_refsource_MISC