Resource management error in Mozilla Firefox - CVE-2019-9809

Vulnerability identifier: #VU18046

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2019-9809

CWE-ID: CWE-399

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Mozilla

Affected software:
Mozilla Firefox

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect processing of modal alert messages sent by FTP server. A remote attacker can trick the victim to connect to a malicious FTP server and trigger a series of modal alert messages for these resources through invalid credentials or locations, resulting in denial of service attack

Install updates from vendor's website.

• https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1282430
• https://bugzilla.mozilla.org/show_bug.cgi?id=1523249