FKIE_CVE-2015-6564
Vulnerability from fkie_nvd - Published: 2015-08-24 01:59 - Updated: 2026-06-17 00:31
Severity
Summary
Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH before 7.0 on non-OpenBSD platforms might allow local users to gain privileges by leveraging control of the sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request.
References
{
"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:openbsd:openssh:*:*:*:*:*:*:*:*",
"matchCriteriaId": "27C9A807-7740-4D75-9B01-91ED53D14C40",
"versionEndIncluding": "6.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH before 7.0 on non-OpenBSD platforms might allow local users to gain privileges by leveraging control of the sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request."
},
{
"lang": "es",
"value": "Vulnerabilidad de uso despu\u00e9s de la liberaci\u00f3n de la memoria en la funci\u00f3n mm_answer_pam_free_ctx en monitor.c en sshd en OpenSSH en versiones anteriores a 7.0 en plataformas no OpenBSD, podr\u00eda permitir a usuarios locales obtener privilegios mediante el aprovechamiento del control del sshd uid para enviar una petici\u00f3n MONITOR_REQ_PAM_FREE_CTX inesperadamente temprana."
}
],
"id": "CVE-2015-6564",
"lastModified": "2026-06-17T00:31:03.993",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2015-6564",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-27T16:18:01.378706Z",
"version": "2.0.3"
}
}
]
},
"published": "2015-08-24T01:59:01.657",
"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html"
},
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
},
{
"source": "cve@mitre.org",
"url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
},
{
"source": "cve@mitre.org",
"url": "http://seclists.org/fulldisclosure/2015/Aug/54"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://www.openssh.com/txt/release-7.0"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2015/08/22/1"
},
{
"source": "cve@mitre.org",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/76317"
},
{
"source": "cve@mitre.org",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
},
{
"source": "cve@mitre.org",
"url": "https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7"
},
{
"source": "cve@mitre.org",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10136"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
},
{
"source": "cve@mitre.org",
"url": "https://security.gentoo.org/glsa/201512-04"
},
{
"source": "cve@mitre.org",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-764"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://seclists.org/fulldisclosure/2015/Aug/54"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.openssh.com/txt/release-7.0"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2015/08/22/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/76317"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10136"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201512-04"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-764"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…