Bug 1696127 (CVE-2018-12402) - CVE-2018-12402 firefox: WebBrowserPersist uses incorrect origin information
Summary: CVE-2018-12402 firefox: WebBrowserPersist uses incorrect origin information
Alias: CVE-2018-12402
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1692382
TreeView+ depends on / blocked
Reported: 2019-04-04 08:07 UTC by msiddiqu
Modified: 2021-02-16 22:08 UTC (History)
11 users (show)

Fixed In Version: firefox 63
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Clone Of:
Last Closed: 2019-04-05 03:11:59 UTC

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Description msiddiqu 2019-04-04 08:07:16 UTC
The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This manifests when sub-resources are loaded as part of "Save Page As..." functionality. For example, a malicious page could recover a visitor's Windows username and NTLM hash by including resources otherwise unreachable to the malicious page, if they can convince the visitor to save the complete web page. Similarly, SameSite cookies are sent on cross-origin requests when the "Save Page As..." menu item is selected to save a page, which can result in saving the wrong version of resources based on those cookies. This vulnerability affects Firefox < 63.


https://bugzilla.mozilla.org/show_bug.cgi?id=1447087 https://bugzilla.mozilla.org/show_bug.cgi?id=1469916

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