FKIE_CVE-2015-7687
Vulnerability from fkie_nvd - Published: 2017-10-16 18:29 - Updated: 2026-06-17 00:32
Severity
Summary
Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| openbsd | opensmtpd | * | |
| fedoraproject | fedora | 22 | |
| fedoraproject | fedora | 23 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
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"nodes": [
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"matchCriteriaId": "9AA94460-F930-4E1B-90F5-1802AFA75D17",
"versionEndIncluding": "5.7.1",
"vulnerable": true
}
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta."
},
{
"lang": "es",
"value": "Uso de memoria previamente liberada en OpenSMTPD en versiones anteriores a la 5.7.2 permite que atacantes remotos provoquen una denegaci\u00f3n de servicio (cierre inesperado) o que ejecuten c\u00f3digo arbitrario mediante vectores relacionados con req_ca_vrfy_smtp y req_ca_vrfy_mta."
}
],
"id": "CVE-2015-7687",
"lastModified": "2026-06-17T00:32:58.293",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": true,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
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"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
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"impactScore": 5.9,
"source": "nvd@nist.gov",
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}
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},
"published": "2017-10-16T18:29:00.500",
"references": [
{
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"tags": [
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],
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},
{
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html"
},
{
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"url": "http://www.openwall.com/lists/oss-security/2015/10/03/1"
},
{
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"url": "http://www.securityfocus.com/bid/76975"
},
{
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"tags": [
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1268793"
},
{
"source": "cve@mitre.org",
"tags": [
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"Vendor Advisory"
],
"url": "https://www.opensmtpd.org/announces/release-5.7.2.txt"
},
{
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"tags": [
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],
"url": "https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html"
},
{
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"tags": [
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],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html"
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"tags": [
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://www.opensmtpd.org/announces/release-5.7.2.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"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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