CVE-2017-7843
Mozilla: Web worker in Private Browsing mode can write IndexedDB data
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
Cuando se utiliza el modo Navegación Privada, es posible que un trabajador web escriba datos persistentes en IndexedDB y realice fingerprinting en un usuario de forma única. IndexedDB no debería estar disponible en modo Navegación Privada y estos datos almacenados persistirán en varias sesiones en modo Navegación Privada porque no se borran al cerrar. Esta vulnerabilidad afecta a las versiones anteriores a la 52.5.2 de Firefox ESR y las versiones anteriores a la 57.0.1 de Firefox.
A privacy flaw was discovered in Firefox. In Private Browsing mode, a web worker could write persistent data to IndexedDB, which was not cleared when exiting and would persist across multiple sessions. A malicious website could exploit the flaw to bypass private-browsing protections and uniquely fingerprint visitors.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2017-04-12 CVE Reserved
- 2017-12-04 CVE Published
- 2024-08-05 CVE Updated
- 2024-08-05 First Exploit
- 2024-09-14 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/102039 | Issue Tracking | |
| http://www.securityfocus.com/bid/102112 | Third Party Advisory | |
| http://www.securitytracker.com/id/1039954 | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1410106 | 2024-08-05 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2017:3382 | 2018-08-06 | |
| https://www.debian.org/security/2017/dsa-4062 | 2018-08-06 | |
| https://www.mozilla.org/security/advisories/mfsa2017-27 | 2018-08-06 | |
| https://www.mozilla.org/security/advisories/mfsa2017-28 | 2018-08-06 | |
| https://access.redhat.com/security/cve/CVE-2017-7843 | 2017-12-05 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1518566 | 2017-12-05 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Mozilla Search vendor "Mozilla" | Firefox Search vendor "Mozilla" for product "Firefox" | < 57.0.1 Search vendor "Mozilla" for product "Firefox" and version " < 57.0.1" | - |
Affected
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| Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | < 52.5.2 Search vendor "Mozilla" for product "Firefox Esr" and version " < 52.5.2" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.4" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.4" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.5 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.5" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
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