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.
References
Link | Resource |
---|---|
https://bugzilla.mozilla.org/show_bug.cgi?id=1584216 | Issue Tracking Permissions Required |
https://security.gentoo.org/glsa/202003-10 | Third Party Advisory |
https://usn.ubuntu.com/4335-1/ | Third Party Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-33/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-34/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-35/ | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mozilla
Published: 2020-01-08T19:59:44
Updated: 2020-04-29T02:07:16
Reserved: 2019-05-03T00:00:00
Link: CVE-2019-11763
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-01-08T20:15:12.953
Modified: 2023-02-03T17:27:52.730
Link: CVE-2019-11763
JSON object: View
Redhat Information
No data.
CWE