Vulnerability CVE-2018-5116


Published: 2018-06-11

Description:
WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.

Type:

CWE-346

(Origin Validation Error)

Vendor: Mozilla
Product: Firefox 
Version: 57.0.4;
Vendor: Canonical
Product: Ubuntu linux 
Version:
17.10
16.04
14.04

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial

 References:
http://www.securityfocus.com/bid/102786
http://www.securitytracker.com/id/1040270
https://bugzilla.mozilla.org/show_bug.cgi?id=1396399
https://usn.ubuntu.com/3544-1/
https://www.mozilla.org/security/advisories/mfsa2018-02/

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