CVE Vulnerability

CVE-2019-11763

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://www.mozilla.org/security/advisories/mfsa2019-35/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1584216 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2019-34/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/ Vendor Advisory
https://security.gentoo.org/glsa/202003-10 Third Party Advisory
https://usn.ubuntu.com/4335-1/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Information

Published : 2020-01-08 08:15

Updated : 2023-02-03 05:27

NVD link : CVE-2019-11763

Mitre link : CVE-2019-11763

Products Affected

Firefox Esr

Mozilla

CWE
CWE-79