CVE-2019-9801 — Improper Input Validation in Mozilla Firefox

CWE-20 — Improper Input ValidationCWE-88 — Argument Injection6 documents6 sources
Severity
5.3MEDIUMNVD
EPSS
0.4%
top 41.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+3 more
Timeline
PublishedApr 26
Latest updateMay 24

Description

Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry. *Note: This issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages9 packages

▶CVEListV5mozilla/firefoxunspecified — 66
▶NVDmozilla/firefox< 66.0
▶CVEListV5mozilla/firefox_esrunspecified — 60.6

🔴Vulnerability Details

2
GHSA
GHSA-cr8h-fffv-pv55: Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on↗2022-05-24
▶
OSV
CVE-2019-9801: Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on↗2019-04-26
▶

📋Vendor Advisories

2
Red Hat
Mozilla: Windows programs that are not 'URL Handlers' are exposed to web content↗2019-03-20
▶
Debian
CVE-2019-9801: firefox - Firefox will accept any registered Program ID as an external protocol handler an...↗2019
▶

💬Community

1
Bugzilla
CVE-2019-9801 Mozilla: Windows programs that are not 'URL Handlers' are exposed to web content↗2019-03-20
▶