CVE-2014-6051

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"Desbordamiento de enteros en la funci\u00f3n MallocFrameBuffer en vncviewer.c en LibVNCServer 0.9.9 y anteriores permite a servidores remotos VNC causar una denegaci\u00f3n de servicio (ca\u00edda) y posiblemente ejecutar c\u00f3digo arbitrario a trav\u00e9s de un anuncio para un tama\u00f1o grande de pantalla, lo que provoca un desbordamiento de buffer basado en memoria din\u00e1mica."}], "id": "CVE-2014-6051", "lastModified": "2026-06-17T00:12:30.873", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", 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{"acknowledgement": "Red Hat would like to thank oCERT for reporting this issue.", "affected_release": [{"advisory": "RHSA-2014:1826", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "libvncserver-0:0.9.7-7.el6_6.1", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2014-11-11T00:00:00Z"}, {"advisory": "RHSA-2015:0113", "cpe": "cpe:/o:redhat:rhel_eus:6.5", "package": "libvncserver-0:0.9.7-7.el6_5.1", "product_name": "Red Hat Enterprise Linux 6.5 Extended Update Support", "release_date": "2015-02-02T00:00:00Z"}, {"advisory": "RHSA-2014:1826", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "libvncserver-0:0.9.9-9.el7_0.1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2014-11-11T00:00:00Z"}], "bugzilla": {"description": "libvncserver: integer overflow flaw, leading to a heap-based buffer overflow in screen size handling", "id": "1144287", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1144287"}, "csaw": false, "cvss": {"cvss_base_score": "6.0", "cvss_scoring_vector": "AV:N/AC:M/Au:S/C:P/I:P/A:P", "status": "verified"}, "cwe": "CWE-190->CWE-122", "details": ["Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.", "An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way screen sizes were handled by LibVNCServer. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code in the client."], "name": "CVE-2014-6051", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kdenetwork", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kdenetwork", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kdenetwork", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2014-09-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2014-6051\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-6051"], "threat_severity": "Moderate"}

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