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Mozilla Foundation Security Advisory 2016-91

Security vulnerabilities fixed in Firefox 50.0.1

Announced
November 28, 2016
Impact
critical
Products
Firefox
Fixed in
  • Firefox 50.0.1

#CVE-2016-9078: data: URL can inherit wrong origin after an HTTP redirect

Reporter
Alexander Inführ
Impact
critical
Description

Redirection from an HTTP connection to a data: URL assigns the referring site's origin to the data: URL in some circumstances. This can result in same-origin violations against a domain if it loads resources from malicious sites. Cross-origin setting of cookies has been demonstrated without the ability to read them.
Note: This issue only affects Firefox 49 and 50.

References