FKIE_CVE-2015-6563
Vulnerability from fkie_nvd - Published: 2015-08-24 01:59 - Updated: 2026-06-17 00:31
Severity
Summary
The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
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"configurations": [
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"matchCriteriaId": "27C9A807-7740-4D75-9B01-91ED53D14C40",
"versionEndIncluding": "6.9",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c."
},
{
"lang": "es",
"value": "Vulnerabilidad en el componente monitor en sshd en OpenSSH en versiones anteriores a 7.0 en plataformas no OpenBSD, acepta datos de nombre de usuario extra\u00f1os en las solicitudes MONITOR_REQ_PAM_INIT_CTX, lo que permite a usuarios locales llevar a cabo ataques de suplantaci\u00f3n aprovechando cualquier acceso de inicio de sesi\u00f3n SSH junto con el control del sshd uid para enviar una petici\u00f3n MONITOR_REQ_PWNAM manipulada, relacionado con monitor.c y monitor_wrap.c."
}
],
"id": "CVE-2015-6563",
"lastModified": "2026-06-17T00:31:03.787",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 1.9,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
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"exploitabilityScore": 3.4,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
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"attackVector": "LOCAL",
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"type": "Secondary"
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"options": [
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"automatable": "no"
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{
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"role": "CISA Coordinator",
"timestamp": "2026-05-27T16:11:48.443803Z",
"version": "2.0.3"
}
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},
"published": "2015-08-24T01:59:00.127",
"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html"
},
{
"source": "cve@mitre.org",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html"
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{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
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{
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"url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
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{
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"url": "http://seclists.org/fulldisclosure/2015/Aug/54"
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{
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"tags": [
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],
"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"
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{
"source": "cve@mitre.org",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
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{
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"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
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"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/76317"
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"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
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"url": "https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"
},
{
"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://security.netapp.com/advisory/ntap-20180201-0002/"
},
{
"source": "cve@mitre.org",
"url": "https://support.apple.com/HT205375"
},
{
"source": "cve@mitre.org",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html"
},
{
"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"
},
{
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"url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
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{
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"url": "http://seclists.org/fulldisclosure/2015/Aug/54"
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"tags": [
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],
"url": "http://www.openssh.com/txt/release-7.0"
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"url": "http://www.openwall.com/lists/oss-security/2015/08/22/1"
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"url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
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"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
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"url": "http://www.securityfocus.com/bid/76317"
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"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
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"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://security.netapp.com/advisory/ntap-20180201-0002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://support.apple.com/HT205375"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766"
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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"value": "CWE-20"
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"type": "Primary"
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"type": "Secondary"
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]
}
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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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