CVE-2021-1799 (GCVE-0-2021-1799)
Vulnerability from cvelistv5 – Published: 2021-04-02 18:04 – Updated: 2024-08-03 16:25
VLAI
EPSS
VEX
Summary
A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on arbitrary servers.
Severity
6.5 (Medium)
CWE
- A malicious website may be able to access restricted ports on arbitrary servers
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://support.apple.com/en-us/HT212147 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212146 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212148 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212149 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212152 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202104-03 | vendor-advisoryx_refsource_GENTOO |
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apple | iOS and iPadOS |
Affected:
unspecified , < 14.4
(custom)
|
guessed | |
| Apple | macOS |
Affected:
unspecified , < 11.2
(custom)
|
guessed | |
| Apple | macOS |
Affected:
unspecified , < 7.3
(custom)
|
guessed | |
| Apple | macOS |
Affected:
unspecified , < 14.4
(custom)
|
guessed | |
| Apple | macOS |
Affected:
unspecified , < 14.0
(custom)
|
guessed |
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"criteria": "cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*",
"matchCriteriaId": "77FB95B4-8279-4DB9-B98F-DCFB2A212668",
"versionEndExcluding": "2.30.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on arbitrary servers."
},
{
"lang": "es",
"value": "Se abord\u00f3 un problema de redirecci\u00f3n de puertos con una comprobaci\u00f3n de puertos adicional.\u0026#xa0;Este problema es corregido en macOS Big Sur versi\u00f3n 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS versi\u00f3n 14.4, watchOS versi\u00f3n 7.3, iOS versi\u00f3n 14.4 y iPadOS versi\u00f3n 14.4, Safari versi\u00f3n 14.0.3.\u0026#xa0;Un sitio web malicioso puede ser capaz de acceder a puertos restringidos en servidores arbitrarios."
}
],
"id": "CVE-2021-1799",
"lastModified": "2024-11-21T05:45:08.180",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"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,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-04-02T19:15:19.617",
"references": [
{
"source": "product-security@apple.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/"
},
{
"source": "product-security@apple.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/"
},
{
"source": "product-security@apple.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202104-03"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212146"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212147"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212148"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212149"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212152"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202104-03"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212146"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212147"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212148"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212149"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212152"
}
],
"sourceIdentifier": "product-security@apple.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T16:06:11+00:00",
"cve": "CVE-2021-1799",
"id": "CVE-2021-1799",
"initial_release_date": "2021-03-22T00:00:00+00:00",
"product_status:fixed": "70",
"product_status:known_affected": "9",
"product_status:known_not_affected": "436",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "webkitgtk: Access to restricted ports on arbitrary servers via port redirection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-1799.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "critical",
"current_release_date": "2026-09-15T02:32:57Z",
"cve": "CVE-2021-1799",
"id": "CVE-2021-1799",
"initial_release_date": "2023-02-15T03:50:17Z",
"product_status:recommended": "990",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-1799",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-1799.json",
"version": "18"
}
}
}
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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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