CVE-2019-11763

 

Published at: - 08-01-2020 09:15

Last modified: - 24-09-2022 03:03

Total changes: - 2

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

 

Verification logic

 

Reference

• https://www.mozilla.org/security/advisories/mfsa2019-35/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1584216
• https://www.mozilla.org/security/advisories/mfsa2019-34/
• https://www.mozilla.org/security/advisories/mfsa2019-33/
• GLSA-202003-10-
• USN-4335-1-

 

Keywords

NVD

 

CVE-2019-11763

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures