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CVE-2018-5133

Date: June 11, 2018

If the "app.support.baseURL" preference is changed by a malicious local program to contain HTML and script content, this content is not sanitized. It will be executed if a user loads "chrome://browser/content/preferences/in-content/preferences.xul" directly in a tab and executes a search. This stored preference is also executed whenever an EME video player plugin displays a CDM-disabled message as a notification message. This vulnerability affects Firefox < 59.

Severity Score

Related Resources (9)

https://nvd.nist.gov/vuln/detail/CVE-2018-5133
https://www.mozilla.org/security/advisories/mfsa2018-06/
http://www.securitytracker.com/id/1040514
http://www.securityfocus.com/bid/103386
https://bugzilla.mozilla.org/show_bug.cgi?id=1430511
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-5133
https://bugzilla.mozilla.org/show_bug.cgi?id=1430974
https://usn.ubuntu.com/3596-1/
https://www.mend.io/vulnerability-database/CVE-2018-5133

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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