firefox: The internal WebBrowserPersist code does not use correct origin context for a resource being saved
CVE-2018-12402 is fixed in 4 products on 1 platform, first by firefox 63.0+build2-0ubuntu0.18.04.2, released October 23, 2018. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-globalmenu · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-globalmenu 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-mozsymbols 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-testsuite · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-testsuite 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
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