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"cveId": "CVE-2023-43632",
"assignerOrgId": "c15abc07-96a9-4d11-a503-5d621bfe42ba",
"state": "PUBLISHED",
"assignerShortName": "ASRG",
"dateReserved": "2023-09-20T14:34:14.874Z",
"datePublished": "2023-09-21T13:13:30.579Z",
"dateUpdated": "2024-09-24T17:09:26.069Z"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "EVE OS",
"product": "EVE OS",
"programFiles": [
"https://github.com/lf-edge/eve/tree/master/pkg/vtpm/src/server.cpp"
],
"repo": "https://github.com/lf-edge/eve",
"vendor": " LF-Edge, Zededa",
"versions": [
{
"lessThan": "9.5.0",
"status": "affected",
"version": "3.0.0",
"versionType": "release"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"user": "00000000-0000-4000-9000-000000000000",
"value": "Ilay Levi"
}
],
"descriptions": [
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"lang": "en",
"supportingMedia": [
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"type": "text/html",
"value": "\n\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.
VTPM 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
1. Header\n
2. Data\n
When 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
Then, in the function “handleRequest” this size is then used in order to allocate a payload on\nthe stack for the incoming data.\n
As this payload is allocated on the stack, this will allow overflowing the stack size allocated for\nthe relevant process with freely controlled data.
* An attacker can crash the system.
* An attacker can gain control over the system, specifically on the “vtpm_server” process\nwhich has very high privileges.\n\n
"
}
],
"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. 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.\n\n\n"
}
],
"impacts": [
{
"capecId": "CAPEC-100",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-100 Overflow Buffers"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
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"value": "GENERAL"
}
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}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "CWE-789 Memory Allocation with Excessive Size Value",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "c15abc07-96a9-4d11-a503-5d621bfe42ba",
"shortName": "ASRG",
"dateUpdated": "2023-09-28T05:40:23.793Z"
},
"references": [
{
"url": "https://asrg.io/security-advisories/cve-2023-43632/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Freely Allocate Buffer on The Stack With Data From Socket",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
},
"adp": [
{
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2024-08-02T19:44:43.555Z"
},
"title": "CVE Program Container",
"references": [
{
"url": "https://asrg.io/security-advisories/cve-2023-43632/",
"tags": [
"x_transferred"
]
}
]
},
{
"affected": [
{
"vendor": "lfedge",
"product": "eve",
"cpes": [
"cpe:2.3:o:lfedge:eve:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "3.0.0",
"status": "affected",
"lessThan": "9.5.0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2024-09-24T17:07:47.768091Z",
"id": "CVE-2023-43632",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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"title": "CISA ADP Vulnrichment",
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"dateUpdated": "2024-09-24T17:09:26.069Z"
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