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CVE-2017-7821

Date: June 11, 2018

A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. This vulnerability affects Firefox < 56.

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2017-7821
https://www.mozilla.org/security/advisories/mfsa2017-21/
http://www.securityfocus.com/bid/101057
http://www.securitytracker.com/id/1039465
https://bugzilla.mozilla.org/show_bug.cgi?id=1346515
https://nvd.nist.gov/vuln/detail/CVE-2017-7821
https://www.mend.io/vulnerability-database/CVE-2017-7821

Severity Score

Weakness Type (CWE)

Incorrect Permission Assignment for Critical Resource

CWE-732

CVSS v3.1

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

CVSS v2

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

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