CVE-2015-6563

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{"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"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*", "matchCriteriaId": "82D0EE4D-4866-43A3-89B5-6C9BBD839493", "versionEndIncluding": "10.11.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.4, "baseSeverity": "MEDIUM", "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"}, "exploitabilityScore": 0.5, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2015-6563", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-27T16:11:48.443803Z", 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"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"}, {"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/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"}, {"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://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"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2016:0741", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "openssh-0:5.3p1-117.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-05-10T00:00:00Z"}, {"advisory": "RHSA-2015:2088", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "openssh-0:6.6.1p1-22.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-11-19T00:00:00Z"}], "bugzilla": {"description": "openssh: Privilege separation weakness related to PAM support", "id": "1252844", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1252844"}, "csaw": false, "cvss": {"cvss_base_score": "6.2", "cvss_scoring_vector": "AV:L/AC:H/Au:N/C:C/I:C/A:C", "status": "verified"}, "cwe": "CWE-266", "details": ["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.", "A flaw was found in the way OpenSSH handled PAM authentication when using privilege separation. An attacker with valid credentials on the system and able to fully compromise a non-privileged pre-authentication process using a different flaw could use this flaw to authenticate as other users."], "name": "CVE-2015-6563", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2015-08-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-6563\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-6563\nhttp://www.openssh.com/txt/release-7.0"], "threat_severity": "Moderate"}

{}