CVE-2019-9809

firefox: If the source for resources on a page is through an FTP connection, it is possible to trigger a series of modal alert...

CVE-2019-9809 is fixed in 4 products on 1 platform, first by firefox 66.0+build3-0ubuntu0.18.04.1, released March 19, 2019. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0164
76th percentile

If the source for resources on a page is through an FTP connection, it is possible to trigger a series of modal alert messages for these resources through invalid credentials or locations. These messages cannot be immediately dismissed, allowing for a denial of service (DOS) attack. This vulnerability affects Firefox < 66.

Where it's fixed

ProductFixed inFixReleased
Linux
firefox · Ubuntu 18.04.6 LTS (bionic) 66.0+build3-0ubuntu0.18.04.1 firefox 66.0+build3-0ubuntu0.18.04.1 Mar 19, 2019
firefox-globalmenu · Ubuntu 18.04.6 LTS (bionic) 66.0+build3-0ubuntu0.18.04.1 firefox-globalmenu 66.0+build3-0ubuntu0.18.04.1 Mar 19, 2019
firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 66.0+build3-0ubuntu0.18.04.1 firefox-mozsymbols 66.0+build3-0ubuntu0.18.04.1 Mar 19, 2019
firefox-testsuite · Ubuntu 18.04.6 LTS (bionic) 66.0+build3-0ubuntu0.18.04.1 firefox-testsuite 66.0+build3-0ubuntu0.18.04.1 Mar 19, 2019