ubuntu-cve-2021-29974
Vulnerability from osv_ubuntu
Published
2021-07-15 00:00
Modified
2026-04-22 07:40
Summary
Details
When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox < 90.
Severity
4.3 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "90.0+build1-0ubuntu0.18.04.1"
},
{
"binary_name": "firefox-geckodriver",
"binary_version": "90.0+build1-0ubuntu0.18.04.1"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "90.0+build1-0ubuntu0.18.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "firefox",
"purl": "pkg:deb/ubuntu/firefox@90.0+build1-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "90.0+build1-0ubuntu0.18.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"56.0+build6-0ubuntu1",
"57.0.1+build2-0ubuntu1",
"59.0.1+build1-0ubuntu1",
"59.0.2+build1-0ubuntu1",
"60.0+build2-0ubuntu1",
"60.0.1+build2-0ubuntu0.18.04.1",
"60.0.2+build1-0ubuntu0.18.04.1",
"61.0+build3-0ubuntu0.18.04.1",
"61.0.1+build1-0ubuntu0.18.04.1",
"62.0+build2-0ubuntu0.18.04.3",
"62.0+build2-0ubuntu0.18.04.4",
"62.0+build2-0ubuntu0.18.04.5",
"62.0.3+build1-0ubuntu0.18.04.1",
"63.0+build2-0ubuntu0.18.04.2",
"63.0.3+build1-0ubuntu0.18.04.1",
"64.0+build3-0ubuntu0.18.04.1",
"65.0+build2-0ubuntu0.18.04.1",
"65.0.1+build2-0ubuntu0.18.04.1",
"66.0+build3-0ubuntu0.18.04.1",
"66.0.1+build1-0ubuntu0.18.04.1",
"66.0.2+build1-0ubuntu0.18.04.1",
"66.0.3+build1-0ubuntu0.18.04.1",
"66.0.4+build3-0ubuntu0.18.04.1",
"66.0.5+build1-0ubuntu0.18.04.1",
"67.0+build2-0ubuntu0.18.04.1",
"67.0.1+build1-0ubuntu0.18.04.1",
"67.0.2+build2-0ubuntu0.18.04.1",
"67.0.3+build1-0ubuntu0.18.04.1",
"67.0.4+build1-0ubuntu0.18.04.1",
"68.0+build3-0ubuntu0.18.04.1",
"68.0.1+build1-0ubuntu0.18.04.1",
"68.0.2+build1-0ubuntu0.18.04.1",
"69.0+build2-0ubuntu0.18.04.1",
"69.0.1+build1-0ubuntu0.18.04.1",
"69.0.2+build1-0ubuntu0.18.04.1",
"70.0+build2-0ubuntu0.18.04.1",
"70.0.1+build1-0ubuntu0.18.04.1",
"71.0+build5-0ubuntu0.18.04.1",
"72.0.1+build1-0ubuntu0.18.04.1",
"72.0.2+build1-0ubuntu0.18.04.1",
"73.0+build3-0ubuntu0.18.04.1",
"73.0.1+build1-0ubuntu0.18.04.1",
"74.0+build3-0ubuntu0.18.04.1",
"74.0.1+build1-0ubuntu0.18.04.1",
"75.0+build3-0ubuntu0.18.04.1",
"76.0+build2-0ubuntu0.18.04.1",
"76.0.1+build1-0ubuntu0.18.04.1",
"77.0.1+build1-0ubuntu0.18.04.1",
"78.0.1+build1-0ubuntu0.18.04.1",
"78.0.2+build2-0ubuntu0.18.04.1",
"79.0+build1-0ubuntu0.18.04.1",
"80.0+build2-0ubuntu0.18.04.1",
"80.0.1+build1-0ubuntu0.18.04.1",
"81.0+build2-0ubuntu0.18.04.1",
"81.0.2+build1-0ubuntu0.18.04.1",
"82.0+build2-0ubuntu0.18.04.1",
"82.0.2+build1-0ubuntu0.18.04.1",
"82.0.3+build1-0ubuntu0.18.04.1",
"83.0+build2-0ubuntu0.18.04.2",
"84.0+build3-0ubuntu0.18.04.1",
"84.0.1+build1-0ubuntu0.18.04.1",
"84.0.2+build1-0ubuntu0.18.04.1",
"85.0+build1-0ubuntu0.18.04.1",
"85.0.1+build1-0ubuntu0.18.04.1",
"86.0+build3-0ubuntu0.18.04.1",
"86.0.1+build1-0ubuntu0.18.04.1",
"87.0+build3-0ubuntu0.18.04.2",
"88.0+build2-0ubuntu0.18.04.2",
"88.0.1+build1-0ubuntu0.18.04.2",
"89.0+build2-0ubuntu0.18.04.2",
"89.0.1+build1-0ubuntu0.18.04.1",
"89.0.2+build1-0ubuntu0.18.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmozjs-52-0",
"binary_version": "52.9.1-0ubuntu0.18.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "mozjs52",
"purl": "pkg:deb/ubuntu/mozjs52@52.9.1-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"52.3.1-0ubuntu3",
"52.3.1-7fakesync1",
"52.8.1-0ubuntu0.18.04.1",
"52.9.1-0ubuntu0.18.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmozjs-38-0",
"binary_version": "38.8.0~repack1-0ubuntu4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "mozjs38",
"purl": "pkg:deb/ubuntu/mozjs38@38.8.0~repack1-0ubuntu4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"38.8.0~repack1-0ubuntu1",
"38.8.0~repack1-0ubuntu3",
"38.8.0~repack1-0ubuntu4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "90.0+build1-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-geckodriver",
"binary_version": "90.0+build1-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "90.0+build1-0ubuntu0.20.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "firefox",
"purl": "pkg:deb/ubuntu/firefox@90.0+build1-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "90.0+build1-0ubuntu0.20.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"69.0.3+build1-0ubuntu1",
"70.0+build2-0ubuntu1",
"70.0+build2-0ubuntu2",
"70.0.1+build1-0ubuntu2",
"71.0+build2-0ubuntu2",
"71.0+build5-0ubuntu1",
"72.0.1+build1-0ubuntu1",
"72.0.2+build1-0ubuntu1",
"73.0+build1-0ubuntu1",
"73.0+build2-0ubuntu1",
"73.0+build3-0ubuntu1",
"73.0.1+build1-0ubuntu1",
"74.0+build1-0ubuntu1",
"74.0+build2-0ubuntu1",
"74.0+build2-0ubuntu2",
"74.0+build3-0ubuntu1",
"75.0+build3-0ubuntu1",
"76.0+build2-0ubuntu0.20.04.1",
"76.0.1+build1-0ubuntu0.20.04.1",
"77.0.1+build1-0ubuntu0.20.04.1",
"78.0.1+build1-0ubuntu0.20.04.1",
"78.0.2+build2-0ubuntu0.20.04.1",
"79.0+build1-0ubuntu0.20.04.1",
"80.0+build2-0ubuntu0.20.04.1",
"80.0.1+build1-0ubuntu0.20.04.1",
"81.0+build2-0ubuntu0.20.04.1",
"81.0.2+build1-0ubuntu0.20.04.1",
"82.0+build2-0ubuntu0.20.04.1",
"82.0.2+build1-0ubuntu0.20.04.1",
"82.0.3+build1-0ubuntu0.20.04.1",
"83.0+build2-0ubuntu0.20.04.1",
"84.0+build3-0ubuntu0.20.04.1",
"84.0.1+build1-0ubuntu0.20.04.1",
"84.0.2+build1-0ubuntu0.20.04.1",
"85.0+build1-0ubuntu0.20.04.1",
"85.0.1+build1-0ubuntu0.20.04.1",
"86.0+build3-0ubuntu0.20.04.1",
"86.0.1+build1-0ubuntu0.20.04.1",
"87.0+build3-0ubuntu0.20.04.2",
"88.0+build2-0ubuntu0.20.04.1",
"88.0.1+build1-0ubuntu0.20.04.2",
"89.0+build2-0ubuntu0.20.04.2",
"89.0.1+build1-0ubuntu0.20.04.1",
"89.0.2+build1-0ubuntu0.20.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmozjs-68-0",
"binary_version": "68.6.0-1ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "mozjs68",
"purl": "pkg:deb/ubuntu/mozjs68@68.6.0-1ubuntu1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"68.5.0-1~fakesync",
"68.5.0-2~fakesync",
"68.6.0-1",
"68.6.0-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmozjs-52-0",
"binary_version": "52.9.1-1ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "mozjs52",
"purl": "pkg:deb/ubuntu/mozjs52@52.9.1-1ubuntu3?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"52.9.1-1build1",
"52.9.1-1ubuntu3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmozjs-78-0",
"binary_version": "78.15.0-4ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "mozjs78",
"purl": "pkg:deb/ubuntu/mozjs78@78.15.0-4ubuntu1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"78.13.0-1",
"78.15.0-2",
"78.15.0-4ubuntu1"
]
}
],
"aliases": [],
"details": "When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox \u003c 90.",
"id": "UBUNTU-CVE-2021-29974",
"modified": "2026-04-22T07:40:00Z",
"published": "2021-07-15T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-29974"
},
{
"type": "REPORT",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-28/#CVE-2021-29974"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5011-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-29974"
}
],
"related": [
"USN-5011-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-29974"
]
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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