CVE-2017-5389

Source
Severity High
Remote Yes
Type Access restriction bypass
Description
WebExtensions in Firefox < 51 could use the mozAddonManager API by modifying the CSP headers on sites with the appropriate permissions and then using host requests to redirect script loads to a malicious site. This allows a malicious extension to then install additional extensions without explicit user permission.
Group Package Affected Fixed Severity Status Ticket
AVG-157 firefox 50.1.0-1 51.0.1-1 Critical Fixed
Date Advisory Group Package Severity Description
29 Jan 2017 ASA-201701-39 AVG-157 firefox Critical multiple issues
References
https://www.mozilla.org/en-US/security/advisories/mfsa2017-01/#CVE-2017-5389
https://bugzilla.mozilla.org/show_bug.cgi?id=1308688