Published: 11/06/2018 Updated: 07/08/2018

CVSS v2 Base Score: 5.8 | Impact Score: 4.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 6.1 | Impact Score: 2.7 | Exploitability Score: 2.8

VMScore: 516

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

WebExtensions 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. This vulnerability affects Firefox < 51.

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mozilla firefox

Firefox could be made to crash or run programs as your login if it opened a malicious website ...

USN-3175-1 introduced a regression in Firefox ...

Mozilla Foundation Security Advisory 2017-01 Security vulnerabilities fixed in Firefox 51 Announced January 24, 2017 Impact critical Products Firefox Fixed in Firefox 51 ...

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 ...

CWE-601 https://www.mozilla.org/security/advisories/mfsa2017-01/https://bugzilla.mozilla.org/show_bug.cgi?id=1308688 http://www.securitytracker.com/id/1037693 http://www.securityfocus.com/bid/95763 https://nvd.nist.gov https://usn.ubuntu.com/3175-1/

CVE-2017-5389

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