#VU22168 Protection mechanism failure in Mozilla Firefox


Published: 2019-10-23

Vulnerability identifier: #VU22168

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11763

CWE-ID: CWE-693

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability exists due to the way Firefox processes HTML entities. A remote attacker can create a specially crafted web page and make the browser treat HTML comment text  as HTML, which could have led to XSS in a web application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 60.0 - 69.0.3


External links
http://www.mozilla.org/en-US/security/advisories/mfsa2019-34/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability