CVE-2018-5105

Description

WebExtensions can bypass user prompts to first save and then open an arbitrarily downloaded file. This can result in an executable file running with local user privileges without explicit user consent. This vulnerability affects Firefox < 58.

7.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.08%

Vendor Advisory ubuntu.com Vendor Advisory mozilla.org

Affected: Mozilla Firefox

References

Link	Tags
http://www.securitytracker.com/id/1040270	vdb entry third party advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1390882	issue tracking permissions required
https://usn.ubuntu.com/3544-1/	third party advisory vendor advisory
http://www.securityfocus.com/bid/102786	vdb entry third party advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-5105?: CVE-2018-5105 has been scored as a high severity vulnerability.
How to fix CVE-2018-5105?: To fix CVE-2018-5105, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-5105 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-5105 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-5105?: CVE-2018-5105 affects Mozilla Firefox.

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