| Name | CVE-2017-7843 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1202-1, DSA-4062-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 125.0.2-1 | fixed |
| firefox-esr (PTS) | buster | 91.12.0esr-1~deb10u1 | fixed |
| buster (security) | 115.10.0esr-1~deb10u1 | fixed | |
| bullseye | 115.7.0esr-1~deb11u1 | fixed | |
| bullseye (security) | 115.10.0esr-1~deb11u1 | fixed | |
| bookworm | 115.7.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 115.10.0esr-1~deb12u1 | fixed | |
| trixie | 115.8.0esr-1 | fixed | |
| sid | 115.10.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 57.0.1-1 | |||
| firefox-esr | source | wheezy | 52.5.2esr-1~deb7u1 | DLA-1202-1 | ||
| firefox-esr | source | jessie | 52.5.2esr-1~deb8u1 | DSA-4062-1 | ||
| firefox-esr | source | stretch | 52.5.2esr-1~deb9u1 | DSA-4062-1 | ||
| firefox-esr | source | (unstable) | 52.5.2esr-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2017-27/#CVE-2017-7843
https://www.mozilla.org/en-US/security/advisories/mfsa2017-28/#CVE-2017-7843
https://bugzilla.mozilla.org/show_bug.cgi?id=1410106