CVE-2019-9803
CVSS V2 Medium 5.8
CVSS V3 High 7.4
Description
The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle attacks on the linked resources. This vulnerability affects Firefox < 66.
Overview
- CVE ID
- CVE-2019-9803
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-04-26T17:29:03
- Last Modified Date
- 2019-04-30T23:51:48
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 66.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.4
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2019-07/ | Vendor Advisory |
| https://w3c.github.io/webappsec-upgrade-insecure-requests/ | Third Party Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1515863 | Issue Tracking Permissions Required Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1437009 | Issue Tracking Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-9803 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9803 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:53:55 | Added to TrackCVE | |||
| 2022-12-03 20:09:34 | 2019-04-26T17:29Z | 2019-04-26T17:29:03 | CVE Published Date | updated |
| 2022-12-03 20:09:34 | 2019-04-30T23:51:48 | CVE Modified Date | updated | |
| 2022-12-03 20:09:34 | Analyzed | Vulnerability Status | updated |