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{}

{"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": "2026-05-06T22:30:45.220", "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}]}, "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"}, {"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", 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{"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"}

{}