CVE-2020-6806 (GCVE-0-2020-6806)
Vulnerability from cvelistv5 – Published: 2020-03-25 21:14 – Updated: 2024-08-04 09:11
VLAI
EPSS
VEX
Summary
By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
Severity
8.8 (High)
CWE
- BodyStream::OnInputStreamReady was missing protections against state confusion
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1612308 | x_refsource_MISC |
| https://usn.ubuntu.com/4328-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/4335-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://packetstormsecurity.com/files/157524/Firef… | x_refsource_MISC |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Mozilla | Thunderbird |
Affected:
unspecified , < 68.6
(custom)
|
guessed | |
| Mozilla | Firefox |
Affected:
unspecified , < 74
(custom)
Affected: unspecified , < ESR68.6 (custom) |
guessed | |
| Mozilla | Firefox ESR |
Affected:
unspecified , < 68.6
(custom)
|
guessed |
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Permissions Required"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1612308"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://usn.ubuntu.com/4328-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://usn.ubuntu.com/4335-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2020-08/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2020-09/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2020-10/"
}
],
"sourceIdentifier": "security@mozilla.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2025-11-21T16:53:34+00:00",
"cve": "CVE-2020-6806",
"id": "CVE-2020-6806",
"initial_release_date": "2020-03-10T00:00:00+00:00",
"product_status:fixed": "205",
"product_status:known_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Mozilla: BodyStream:: OnInputStreamReady was missing protections against state confusion",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-6806.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-04T00:52:19Z",
"cve": "CVE-2020-6806",
"id": "CVE-2020-6806",
"initial_release_date": "2023-02-15T04:02:10Z",
"product_status:recommended": "376",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-6806",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-6806.json",
"version": "21"
}
}
}
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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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