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. This vulnerability affects Firefox ESR < 52.5.2 and Firefox < 57.0.1.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Primary | 3.0 | 7.5 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Primary | 2.0 | 5.0 | MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| Hyperlink | Source | Resource |
|---|---|---|
| http://www.securityfocus.com/bid/102039 | security@mozilla.org | Issue Tracking Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/102112 | security@mozilla.org | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039954 | security@mozilla.org | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:3382 | security@mozilla.org | Third Party Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1410106 | security@mozilla.org | Exploit Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html | security@mozilla.org | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-4062 | security@mozilla.org | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-27/ | security@mozilla.org | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-28/ | security@mozilla.org | Vendor Advisory |
| http://www.securityfocus.com/bid/102039 | af854a3a-2127-422b-91ae-364da2661108 | Issue Tracking Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/102112 | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039954 | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:3382 | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1410106 | af854a3a-2127-422b-91ae-364da2661108 | Exploit Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-4062 | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-27/ | af854a3a-2127-422b-91ae-364da2661108 | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-28/ | af854a3a-2127-422b-91ae-364da2661108 | Vendor Advisory |