gsd-2020-26958
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-26958",
"description": "Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox \u003c 83, Firefox ESR \u003c 78.5, and Thunderbird \u003c 78.5.",
"id": "GSD-2020-26958",
"references": [
"https://www.suse.com/security/cve/CVE-2020-26958.html",
"https://www.debian.org/security/2020/dsa-4796",
"https://www.debian.org/security/2020/dsa-4793",
"https://access.redhat.com/errata/RHSA-2020:5314",
"https://access.redhat.com/errata/RHSA-2020:5257",
"https://access.redhat.com/errata/RHSA-2020:5240",
"https://access.redhat.com/errata/RHSA-2020:5239",
"https://access.redhat.com/errata/RHSA-2020:5238",
"https://access.redhat.com/errata/RHSA-2020:5237",
"https://access.redhat.com/errata/RHSA-2020:5236",
"https://access.redhat.com/errata/RHSA-2020:5235",
"https://access.redhat.com/errata/RHSA-2020:5234",
"https://access.redhat.com/errata/RHSA-2020:5233",
"https://access.redhat.com/errata/RHSA-2020:5232",
"https://access.redhat.com/errata/RHSA-2020:5231",
"https://ubuntu.com/security/CVE-2020-26958",
"https://advisories.mageia.org/CVE-2020-26958.html",
"https://security.archlinux.org/CVE-2020-26958",
"https://linux.oracle.com/cve/CVE-2020-26958.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox \u003c 83, Firefox ESR \u003c 78.5, and Thunderbird \u003c 78.5.",
"id": "GSD-2020-26958",
"modified": "2023-12-13T01:22:09.305092Z",
"schema_version": "1.4.0"
}
},
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}
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"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1669355",
"refsource": "MISC",
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},
{
"name": "https://www.mozilla.org/security/advisories/mfsa2020-50/",
"refsource": "CONFIRM",
"url": "https://www.mozilla.org/security/advisories/mfsa2020-50/"
},
{
"name": "https://www.mozilla.org/security/advisories/mfsa2020-52/",
"refsource": "CONFIRM",
"url": "https://www.mozilla.org/security/advisories/mfsa2020-52/"
},
{
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},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe_match": [
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"cpe_name": [],
"versionEndExcluding": "83.0",
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{
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": true
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.7
}
},
"lastModifiedDate": "2020-12-10T18:03Z",
"publishedDate": "2020-12-09T01:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.