CVE-2021-30836 (GCVE-0-2021-30836)
Vulnerability from cvelistv5 – Published: 2021-10-28 18:17 – Updated: 2024-08-03 22:48
VLAI
EPSS
VEX
Summary
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.
Severity
5.5 (Medium)
CWE
- Processing a maliciously crafted audio file may disclose restricted memory
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://support.apple.com/en-us/HT212807 | x_refsource_MISC |
| https://support.apple.com/kb/HT212816 | x_refsource_CONFIRM |
| https://support.apple.com/en-us/HT212814 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212819 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212815 | x_refsource_MISC |
| https://support.apple.com/kb/HT212869 | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2021/12/20/6 | mailing-listx_refsource_MLIST |
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apple | iOS and iPadOS |
Affected:
unspecified , < 14.8
(custom)
|
guessed | |
| Apple | iOS and iPadOS |
Affected:
unspecified , < 15
(custom)
|
guessed | |
| Apple | tvOS |
Affected:
unspecified , < 15
(custom)
|
guessed | |
| Apple | watchOS |
Affected:
unspecified , < 8
(custom)
|
guessed |
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212819"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/kb/HT212816"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/kb/HT212869"
}
],
"sourceIdentifier": "product-security@apple.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T15:54:35+00:00",
"cve": "CVE-2021-30836",
"id": "CVE-2021-30836",
"initial_release_date": "2021-12-20T00:00:00+00:00",
"product_status:fixed": "70",
"product_status:known_affected": "9",
"product_status:known_not_affected": "5",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "webkitgtk: Out-of-bounds read leading to memory disclosure",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-30836.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-11T02:41:22Z",
"cve": "CVE-2021-30836",
"id": "CVE-2021-30836",
"initial_release_date": "2023-02-15T03:41:36Z",
"product_status:known_affected": "1",
"product_status:known_not_affected": "10",
"product_status:recommended": "911",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-30836",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-30836.json",
"version": "19"
}
}
}
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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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