CVE-2017-7842 — MEDIUM (5.3)

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Mozilla	Firefox	<= 56.0.2

Related Weaknesses (CWE)

CWE-200

References

http://www.securityfocus.com/bid/101832Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039803Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1397064Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory
http://www.securityfocus.com/bid/101832Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039803Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1397064Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory

FAQ

What is CVE-2017-7842?

CVE-2017-7842 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 r...

How severe is CVE-2017-7842?

CVE-2017-7842 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-7842?

Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.