99 lines
4.3 KiB
JSON
99 lines
4.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-100403",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-09-25T20:08:33.083Z",
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"datePublished": "2026-11-13T18:41:06.709Z",
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"dateUpdated": "2026-11-13T18:41:06.709Z"
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},
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"containers": {
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"cna": {
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"title": "BACnet Stack: BACnet/SC hub grows its WebSocket reassembly buffer without limit, so a peer can exhaust its memory",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-4vgv-v5ph-rmxr",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-4vgv-v5ph-rmxr"
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},
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{
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"name": "https://github.com/bacnet-stack/bacnet-stack/pull/1433",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/bacnet-stack/bacnet-stack/pull/1433"
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}
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],
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"affected": [
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{
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"vendor": "bacnet-stack",
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"product": "bacnet-stack",
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"versions": [
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{
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"version": "< 1.4.6",
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"status": "affected"
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},
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{
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"version": ">= 1.5.0, < 1.5.2",
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"status": "affected"
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},
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{
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"version": ">= 1.6.0, < 1.6.1",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-11-13T18:41:06.709Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.6, 1.5.2, and 1.6.1, the BACnet/SC hub's Linux WebSocket server reassembles fragmented WebSocket messages into a per-connection fragment_buffer. It grows that buffer with realloc() on every non-final frame, with no upper bound. A peer that streams binary continuation fragments and never sets FIN keeps the hub reallocating until the box runs out of memory or the process is OOM-killed. The buffer starts at the maximum legal BVLC-SC NPDU size, but nothing after that ties its growth back to that limit. This issue has been patched in versions 1.4.6, 1.5.2, 1.6.1, and 1.7.0."
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}
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],
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"source": {
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"advisory": "GHSA-4vgv-v5ph-rmxr",
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"discovery": "UNKNOWN"
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}
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}
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}
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} |