{"api_version":"1","generated_at":"2026-07-23T14:54:30+00:00","cve":"CVE-2023-43632","urls":{"html":"https://cve.report/CVE-2023-43632","api":"https://cve.report/api/cve/CVE-2023-43632.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-43632","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-43632"},"summary":{"title":"CVE-2023-43632","description":"As noted in the “VTPM.md” file in the eve documentation, “VTPM is a server listening on port\n8877 in EVE, exposing limited functionality of the TPM to the clients. \nVTPM allows clients to\nexecute tpm2-tools binaries from a list of hardcoded options”\nThe communication with this server is done using protobuf, and the data is comprised of 2\nparts:\n\n1. Header\n\n2. Data\n\nWhen a connection is made, the server is waiting for 4 bytes of data, which will be the header,\nand these 4 bytes would be parsed as uint32 size of the actual data to come.\n\nThen, in the function “handleRequest” this size is then used in order to allocate a payload on\nthe stack for the incoming data.\n\nAs this payload is allocated on the stack, this will allow overflowing the stack size allocated for\nthe relevant process with freely controlled data.\n\n* An attacker can crash the system. \n* An attacker can gain control over the system, specifically on the “vtpm_server” process\nwhich has very high privileges.","state":"PUBLIC","assigner":"cve@asrg.io","published_at":"2023-09-21 14:15:00","updated_at":"2023-09-28 06:15:00"},"problem_types":["CWE-770"],"metrics":[],"references":[{"url":"https://asrg.io/security-advisories/cve-2023-43632/","name":"https://asrg.io/security-advisories/cve-2023-43632/","refsource":"MISC","tags":[],"title":"asrg.io | 520: Web server is returning an unknown error","mime":"text/html","httpstatus":"520","archivestatus":"404"},{"url":"https://asrg.io/security-advisories/freely-allocate-buffer-on-the-stack-with-data-from-socket/","name":"https://asrg.io/security-advisories/freely-allocate-buffer-on-the-stack-with-data-from-socket/","refsource":"MISC","tags":[],"title":"asrg.io | 520: Web server is returning an unknown error","mime":"text/html","httpstatus":"520","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-43632","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-43632","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"43632","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linuxfoundation","cpe5":"edge_virtualization_engine","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-43632","ASSIGNER":"cve@asrg.io","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"\nAs noted in the “VTPM.md” file in the eve documentation, “VTPM is a server listening on port\n8877 in EVE, exposing limited functionality of the TPM to the clients. \nVTPM allows clients to\nexecute tpm2-tools binaries from a list of hardcoded options”\nThe communication with this server is done using protobuf, and the data is comprised of 2\nparts:\n\n1. 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