CVE-2017-7842

Description

If a document's Referrer Policy attribute is set to "no-referrer" sometimes two network requests are made for "<link>" elements instead of one. One of these requests includes the referrer instead of respecting the set policy to not include a referrer on requests. This vulnerability affects Firefox < 57.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.42%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2017-24/ vendor advisory
http://www.securityfocus.com/bid/101832 vdb entry third party advisory
http://www.securitytracker.com/id/1039803 vdb entry third party advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1397064 issue tracking

Frequently Asked Questions

What is the severity of CVE-2017-7842?
CVE-2017-7842 has been scored as a medium severity vulnerability.
How to fix CVE-2017-7842?
To fix CVE-2017-7842, 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-2017-7842 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7842 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-2017-7842?
CVE-2017-7842 affects Mozilla Firefox.
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