CVE-2017-7797

Public Exploit

Description

Response header name interning does not have same-origin protections and these headers are stored in a global registry. This allows stored header names to be available cross-origin. This vulnerability affects Firefox < 55.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1334776 issue tracking exploit patch
https://www.mozilla.org/security/advisories/mfsa2017-18/ vendor advisory
http://www.securitytracker.com/id/1039124 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7797?
CVE-2017-7797 has been scored as a high severity vulnerability.
How to fix CVE-2017-7797?
To fix CVE-2017-7797, 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-2017-7797 being actively exploited in the wild?
It is possible that CVE-2017-7797 is being exploited or will be exploited in a near future based on public information. 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-2017-7797?
CVE-2017-7797 affects Mozilla Firefox.
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