CVE-2018-10184

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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:haproxy:haproxy:*:*:*:*:*:*:*:*", "matchCriteriaId": "65C3E88A-F1D5-4E0F-AA23-58FCDA5FE3D5", "versionEndExcluding": "1.8.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "B99A2411-7F6A-457F-A7BF-EB13C630F902", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*", "matchCriteriaId": "041F9200-4C01-4187-AE34-240E8277B54D", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*", "matchCriteriaId": "4EB48767-F095-444F-9E05-D9AC345AB803", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against the max_frame_size setting instead of being checked against the bufsize. The max_frame_size only applies to outgoing traffic and not to incoming, so if a large enough frame size is advertised in the SETTINGS frame, a wrapped frame will be defragmented into a temporary allocated buffer where the second fragment may overflow the heap by up to 16 kB. It is very unlikely that this can be exploited for code execution given that buffers are very short lived and their addresses not realistically predictable in production, but the likelihood of an immediate crash is absolutely certain."}, {"lang": "es", "value": "Se ha descubierto un problema en versiones anteriores a la 1.8.8 de HAProxy. La longitud del frame H2 entrante se comprob\u00f3 con la opci\u00f3n max_frame_size en lugar de con bufsize. max_frame_size solo aplica al tr\u00e1fico saliente y no al entrante, por lo que si un tama\u00f1o de frame lo suficientemente grande se anuncia en el frame SETTINGS, un frame ajustado se desfragmentar\u00e1 en un b\u00fafer asignado temporalmente en el que el segundo fragmento podr\u00eda desbordar la memoria din\u00e1mica (heap) hasta los 16 kB. Es muy improbable que esto pueda ser explotado para ejecutar c\u00f3digo, teniendo en cuenta la corta duraci\u00f3n de los b\u00fafers y que sus direcciones no son predecibles de forma realista en producci\u00f3n, pero la posibilidad de un cierre inesperado inmediato es totalmente certera."}], "id": "CVE-2018-10184", "lastModified": "2026-06-17T01:33:38.080", "metrics": {"cvssMetricV2": [{"acInsufInfo": true, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-05-09T07:29:00.280", "references": [{"source": "cve@mitre.org", "url": "http://git.haproxy.org/?p=haproxy-1.8.git%3Ba=commit%3Bh=cd117685f0cff4f2f5577ef6a21eaae96ebd9f28"}, {"source": "cve@mitre.org", "url": "http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=3f0e1ec70173593f4c2b3681b26c04a4ed5fc588"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2018:1372"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.haproxy.org/?p=haproxy-1.8.git%3Ba=commit%3Bh=cd117685f0cff4f2f5577ef6a21eaae96ebd9f28"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=3f0e1ec70173593f4c2b3681b26c04a4ed5fc588"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2018:1372"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHBA-2018:1566", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "impact": "moderate", "package": "haproxy-0:1.8.8-1.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2018-05-17T00:00:00Z"}, {"advisory": "RHSA-2018:1372", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-haproxy18-haproxy-0:1.8.4-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2018-05-14T00:00:00Z"}, {"advisory": "RHSA-2018:1372", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-haproxy18-haproxy-0:1.8.4-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2018-05-14T00:00:00Z"}, {"advisory": "RHSA-2018:1372", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-haproxy18-haproxy-0:1.8.4-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2018-05-14T00:00:00Z"}, {"advisory": "RHSA-2018:1372", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-haproxy18-haproxy-0:1.8.4-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS", "release_date": "2018-05-14T00:00:00Z"}], "bugzilla": {"description": "haproxy: Heap buffer overflow in mux_h2.c:h2_process_demux() can allow attackers to cause a denial of service", "id": "1569297", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1569297"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.6", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-122", "details": ["An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against the max_frame_size setting instead of being checked against the bufsize. The max_frame_size only applies to outgoing traffic and not to incoming, so if a large enough frame size is advertised in the SETTINGS frame, a wrapped frame will be defragmented into a temporary allocated buffer where the second fragment may overflow the heap by up to 16 kB. It is very unlikely that this can be exploited for code execution given that buffers are very short lived and their addresses not realistically predictable in production, but the likelihood of an immediate crash is absolutely certain."], "name": "CVE-2018-10184", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2018-04-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-10184\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-10184"], "threat_severity": "Important"}

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