CVE-2019-15690

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "LibVNCServer", "vendor": "LibVNC", "versions": [{"lessThanOrEqual": "0.9.12", "status": "affected", "version": "*", "versionType": "custom"}]}], "source": "vulnerability@kaspersky.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can result in remote code execution."}, {"lang": "es", "value": "La versi\u00f3n 0.9.12 y anteriores de LibVNCServer contienen una vulnerabilidad de desbordamiento del b\u00fafer de mont\u00f3n dentro de la funci\u00f3n HandleCursorShape() en libvncclient/cursor.c. Un atacante env\u00eda formas de cursor con dimensiones manipulado especiales, lo que puede provocar la ejecuci\u00f3n remota de c\u00f3digo."}], "id": "CVE-2019-15690", "lastModified": "2026-06-17T02:20:52.917", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "vulnerability@kaspersky.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2019-15690", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-01-24T18:22:46.983882Z", "version": "2.0.3"}}]}, "published": "2025-01-24T18:15:27.657", "references": [{"source": "vulnerability@kaspersky.com", "url": "https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/"}], "sourceIdentifier": "vulnerability@kaspersky.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "vulnerability@kaspersky.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2020:0913", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "libvncserver-0:0.9.9-14.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-03-23T00:00:00Z"}, {"advisory": "RHSA-2020:0920", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "libvncserver-0:0.9.11-9.el8_1.2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-03-23T00:00:00Z"}, {"advisory": "RHSA-2020:0921", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "libvncserver-0:0.9.11-9.el8_0.2", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-03-23T00:00:00Z"}], "bugzilla": {"description": "libvncserver: HandleCursorShape() integer overflow resulting in heap-based buffer overflow", "id": "1811948", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1811948"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-190->CWE-122", "details": ["LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can result in remote code execution.", "A flaw was found in libvncserver. An integer overflow within the HandleCursorShape() function can be exploited to cause a heap-based buffer overflow by tricking a user or application using libvncserver to connect to an unstrusted server and subsequently send cursor shapes with specially crafted dimensions. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "mitigation": {"lang": "en:us", "value": "Libvncserver should not be used to connect to untrusted server."}, "name": "CVE-2019-15690", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libvncserver", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2019-12-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-15690\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-15690"], "threat_severity": "Important"}

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