FKIE_CVE-2015-3238
Vulnerability from fkie_nvd - Published: 2015-08-24 14:59 - Updated: 2026-06-17 00:25
Severity
Summary
The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux-pam | linux-pam | * | |
| oracle | sparc-opl_service_processor | * |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
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"nodes": [
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"criteria": "cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*",
"matchCriteriaId": "97736CA5-0370-4CA9-B5D4-E157B3E699F5",
"versionEndIncluding": "1.1.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
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"versionEndIncluding": "1121",
"vulnerable": true
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password."
},
{
"lang": "es",
"value": "Vulnerabilidad en la funci\u00f3n _unix_run_helper_binary en el m\u00f3dulo pam_unix en Linux-PAM (tambi\u00e9n conocido como pam) en versiones anteriores a 1.2.1, cuando no es posible acceder directamente a las contrase\u00f1as, permite a usuarios locales enumerar los nombres de usuario o causar una denegaci\u00f3n de servicio (colgado) a trav\u00e9s de una contrase\u00f1a larga."
}
],
"id": "CVE-2015-3238",
"lastModified": "2026-06-17T00:25:35.967",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
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"cvssMetricV30": [
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"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.0"
},
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"impactScore": 2.5,
"source": "nvd@nist.gov",
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}
]
},
"published": "2015-08-24T14:59:04.010",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html"
},
{
"source": "secalert@redhat.com",
"tags": [
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"url": "http://rhn.redhat.com/errata/RHSA-2015-1640.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2015/06/25/13"
},
{
"source": "secalert@redhat.com",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/75428"
},
{
"source": "secalert@redhat.com",
"url": "http://www.ubuntu.com/usn/USN-2935-1"
},
{
"source": "secalert@redhat.com",
"url": "http://www.ubuntu.com/usn/USN-2935-2"
},
{
"source": "secalert@redhat.com",
"url": "http://www.ubuntu.com/usn/USN-2935-3"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1228571"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/201605-05"
},
{
"source": "secalert@redhat.com",
"tags": [
"Exploit"
],
"url": "https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011/?fid=6551"
},
{
"source": "secalert@redhat.com",
"tags": [
"Exploit"
],
"url": "https://www.trustwave.com/Resources/SpiderLabs-Blog/Username-Enumeration-against-OpenSSH-SELinux-with-CVE-2015-3238/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://rhn.redhat.com/errata/RHSA-2015-1640.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2015/06/25/13"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/75428"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-2935-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-2935-2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-2935-3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1228571"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201605-05"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011/?fid=6551"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "https://www.trustwave.com/Resources/SpiderLabs-Blog/Username-Enumeration-against-OpenSSH-SELinux-with-CVE-2015-3238/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"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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