FKIE_CVE-2021-26675
Vulnerability from fkie_nvd - Published: 2021-02-09 16:15 - Updated: 2026-06-17 03:43
Severity
Summary
A stack-based buffer overflow in dnsproxy in ConnMan before 1.39 could be used by network adjacent attackers to execute code.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| intel | connman | * | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 | |
| opensuse | leap | 15.2 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:intel:connman:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3C6D54B9-DC0E-4300-B554-45AFA532C3CB",
"versionEndExcluding": "1.39",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
"vulnerable": true
}
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},
{
"nodes": [
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"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*",
"matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A",
"vulnerable": true
}
],
"negate": false,
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A stack-based buffer overflow in dnsproxy in ConnMan before 1.39 could be used by network adjacent attackers to execute code."
},
{
"lang": "es",
"value": "Un desbordamiento de b\u00fafer en la regi\u00f3n stack de la memoria en dnsproxy en ConnMan versiones anteriores a 1.39, podr\u00eda ser usado por atacantes adyacentes a la red para ejecutar c\u00f3digo"
}
],
"id": "CVE-2021-26675",
"lastModified": "2026-06-17T03:43:37.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "ADJACENT_NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 6.5,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-02-09T16:15:12.453",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1181751"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=e4079a20f617a4b076af503f6e4e8b0304c9f2cb"
},
{
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],
"url": "https://git.kernel.org/pub/scm/network/connman/connman.git/tree/ChangeLog"
},
{
"source": "cve@mitre.org",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "https://kunnamon.io/tbone/"
},
{
"source": "cve@mitre.org",
"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00013.html"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://security.gentoo.org/glsa/202107-29"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://www.debian.org/security/2021/dsa-4847"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://www.openwall.com/lists/oss-security/2021/02/08/2"
},
{
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"tags": [
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],
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1181751"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://git.kernel.org/pub/scm/network/connman/connman.git/tree/ChangeLog"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://kunnamon.io/tbone/"
},
{
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"tags": [
"Mailing List",
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],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00013.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
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"url": "https://www.debian.org/security/2021/dsa-4847"
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"tags": [
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],
"url": "https://www.openwall.com/lists/oss-security/2021/02/08/2"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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