CVE-2017-7843 — Sensitive Information Exposure in Mozilla Firefox
Severity
7.5HIGHNVD
EPSS
1.1%
top 22.34%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJun 11
Latest updateMay 14
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages6 packages
Also affects: Debian Linux 7.0, 8.0, 9.0, Enterprise Linux 7.4, 7.5
🔴Vulnerability Details
3GHSA▶
GHSA-rpf5-xpfp-546f: When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely↗2022-05-14
CVEList▶
CVE-2017-7843: When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely↗2018-06-11
OSV▶
CVE-2017-7843: When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely↗2018-06-11
📋Vendor Advisories
2💬Community
1Bugzilla
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