CVE-2019-11763
CVSS V2 Medium 4.3
CVSS V3 Medium 6.1
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.
Overview
- CVE ID
- CVE-2019-11763
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-01-08T20:15:12
- Last Modified Date
- 2023-02-03T17:27:52
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 70.0 | |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | 1 | OR | 68.2 | |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | 1 | OR | 68.2 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 6.1
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 2.7
References
| Reference URL | Reference Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2019-35/ | Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1584216 | 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 | |
| https://usn.ubuntu.com/4335-1/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-11763 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11763 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:47:18 | Added to TrackCVE | |||
| 2022-12-04 09:08:36 | 2020-01-08T20:15Z | 2020-01-08T20:15:12 | CVE Published Date | updated |
| 2022-12-04 09:08:36 | 2020-03-14T19:15:20 | CVE Modified Date | updated | |
| 2022-12-04 09:08:37 | Undergoing Analysis | Vulnerability Status | updated | |
| 2023-02-03 19:10:06 | 2023-02-03T17:27:52 | CVE Modified Date | updated | |
| 2023-02-03 19:10:06 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |