CVE-2017-5466

moderate-risk
Published 2018-06-11

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. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Do I need to act?

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0.62% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (15)

Affected Vendors

Redhat Mozilla

References (16)

Third Party Advisory http://www.securityfocus.com/bid/97940
Third Party Advisory http://www.securitytracker.com/id/1038320
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1106
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1201
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1353975
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-10/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-12/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-13/
Third Party Advisory http://www.securityfocus.com/bid/97940
Third Party Advisory http://www.securitytracker.com/id/1038320
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1106
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1201
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1353975
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-10/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-12/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-13/
43
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 2/34 · Minimal
Exposure 18/34 · Moderate