CVE-2017-7843 (GCVE-0-2017-7843)
Vulnerability from cvelistv5 – Published: 2018-06-11 21:00 – Updated: 2024-08-05 16:19
VLAI
EPSS
VEX
Summary
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.
Severity
7.5 (High)
CWE
- Web worker in Private Browsing mode can write IndexedDB data
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2017:3382 | vendor-advisoryx_refsource_REDHAT |
| https://lists.debian.org/debian-lts-announce/2017… | mailing-listx_refsource_MLIST |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1039954 | vdb-entryx_refsource_SECTRACK |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_CONFIRM |
| https://www.debian.org/security/2017/dsa-4062 | vendor-advisoryx_refsource_DEBIAN |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1410106 | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/102039 | vdb-entryx_refsource_BID |
| http://www.securityfocus.com/bid/102112 | vdb-entryx_refsource_BID |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Mozilla | Firefox ESR |
Affected:
unspecified , < 52.5.2
(custom)
|
guessed | |
| Mozilla | Firefox |
Affected:
unspecified , < 57.0.1
(custom)
|
guessed |
Date Public
2017-11-29 00:00
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Firefox.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"16F59A04-14CF-49E2-9973-645477EA09DA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"57.0.1\",\"matchCriteriaId\":\"6499BB9D-0946-495F-9585-6578DCAEC49A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"52.5.2\",\"matchCriteriaId\":\"9E0341B6-2D67-49E6-BA5E-9D3121B05322\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EE249E1B-A1FD-4E08-AA71-A0E1F10FFE97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"33C068A4-3780-4EAB-A937-6082DF847564\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9BBCD86A-E6C7-4444-9D74-F861084090F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"51EF4996-72F4-4FA4-814F-F5991E7A8318\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D99A687E-EAE6-417E-A88E-D0082BC194CD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9EC0D196-F7B8-4BDD-9050-779F7A7FBEE4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A4E9DD8A-A68B-4A69-8B01-BFF92A2020A8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E5ED5807-55B7-47C5-97A6-03233F4FBC3A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"825ECE2D-E232-46E0-A047-074B34DB1E97\"}]}]}],\"references\":[{\"url\":\"http://www.securityfocus.com/bid/102039\",\"source\":\"security@mozilla.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securityfocus.com/bid/102112\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1039954\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:3382\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1410106\",\"source\":\"security@mozilla.org\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2017/dsa-4062\",\"source\":\"security@mozilla.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2017-27/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2017-28/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/102039\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securityfocus.com/bid/102112\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1039954\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:3382\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party 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"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2025-11-25T18:16:14+00:00",
"cve": "CVE-2017-7843",
"id": "CVE-2017-7843",
"initial_release_date": "2017-12-04T00:00:00+00:00",
"product_status:fixed": "210",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Mozilla: Web worker in Private Browsing mode can write IndexedDB data",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-7843.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T09:07:33Z",
"cve": "CVE-2017-7843",
"id": "CVE-2017-7843",
"initial_release_date": "2023-02-15T04:46:37Z",
"product_status:known_not_affected": "151",
"product_status:recommended": "246",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2017-7843",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-7843.json",
"version": "23"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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