Bug 1518566 (CVE-2017-7843) - CVE-2017-7843 Mozilla: Web worker in Private Browsing mode can write IndexedDB data
Summary: CVE-2017-7843 Mozilla: Web worker in Private Browsing mode can write IndexedD...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-7843
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1518567 1518568 1518569 1518570
Blocks: 1518574
TreeView+ depends on / blocked
 
Reported: 2017-11-29 08:32 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-26 01:40 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2017-12-05 06:08:55 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:3382 0 normal SHIPPED_LIVE Important: firefox security update 2017-12-05 10:45:18 UTC

Description Huzaifa S. Sidhpurwala 2017-11-29 08:32:30 UTC 
When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting.
Comment 2 Huzaifa S. Sidhpurwala 2017-11-29 08:32:41 UTC 
External References:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-27/#CVE-2017-7843
Comment 4 Doran Moppert 2017-11-30 03:08:57 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Konark
Comment 5 errata-xmlrpc 2017-12-05 05:45:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:3382 https://access.redhat.com/errata/RHSA-2017:3382
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