CVE-2013-4548

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:6.2:*:*:*:*:*:*:*", "matchCriteriaId": "39D1E296-3040-4CC9-B95B-3E07D73F1150", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:6.3:*:*:*:*:*:*:*", "matchCriteriaId": "FCEE2677-16EE-484F-B2FB-FCA377E0D76B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address."}, {"lang": "es", "value": "La funci\u00f3n mm_newkeys_from_blob en monitor_wrap.c de sshd en OpenSSH 6.2 y 6.3, cuando se utiliza el cifrado AES-GCM, no inicia correctamente la memoria para una estructura de datos de contexto MAC, lo que permite a usuarios remotos autenticados evadir intencionadamente ForceCommand y restricciones login-shell a trav\u00e9s de un paquete de datos que proporciona una direcci\u00f3n de rellamada manipulada."}], "id": "CVE-2013-4548", "lastModified": "2026-06-16T23:57:25.917", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-11-08T15:55:13.747", "references": [{"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html"}, {"source": "secalert@redhat.com", "url": "http://marc.info/?l=bugtraq&m=141576985122836&w=2"}, {"source": "secalert@redhat.com", "url": "http://openwall.com/lists/oss-security/2013/11/08/3"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://www.openssh.com/txt/gcmrekey.adv"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2014-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://marc.info/?l=bugtraq&m=141576985122836&w=2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://openwall.com/lists/oss-security/2013/11/08/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://www.openssh.com/txt/gcmrekey.adv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-2014-1"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "openssh: post-auth memory corruption when using AES-GCM cipher", "id": "1028418", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1028418"}, "csaw": false, "cvss": {"cvss_base_score": "6.5", "cvss_scoring_vector": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "status": "draft"}, "details": ["The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address."], "name": "CVE-2013-4548", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2013-11-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-4548\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-4548\nhttp://www.openssh.com/txt/gcmrekey.adv"], "statement": "Not vulnerable. This issue did not affect the versions of openssh as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for AES-GCM cipher suites.", "threat_severity": "Moderate"}

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