Cross-site scripting in Mozilla Firefox and Firefox ESR - CVE-2017-5466

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Main Vulnerability Database Vulnerabilities #VU6318

Cross-site scripting in Mozilla Firefox and Firefox ESR - CVE-2017-5466

Published: April 19, 2017


Vulnerability identifier: #VU6318
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2017-5466
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability exists due to origin confusion when reloading isolated data:text/html URL. If a page is loaded from an original site through a hyperlink and contains a redirect to a data:text/html URL, triggering a reload will run the reloaded data:text/html page with its origin set incorrectly.

Successful exploitation of this vulnerability may allow an attacker to gain access to potentially sensitive information from another domain.


Affected software

Mozilla Firefox
Firefox ESR
Arch Linux
Red Hat Enterprise Linux for x86_64
SUSE Linux
Ubuntu
Mozilla Thunderbird

How to mitigate CVE-2017-5466

Update to Firefox 53 or Firefox ESR 52.1.


External References

Related Security Bulletins