142 lines
6.0 KiB
JSON
142 lines
6.0 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-2026-55194",
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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": "2026-06-16T15:20:43.087Z",
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"datePublished": "2026-08-19T17:50:30.158Z",
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"dateUpdated": "2026-08-27T16:25:00.719Z"
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},
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"containers": {
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"cna": {
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"title": "FreeRDPHeap-buffer-overflow write in TS Gateway RPC RESPONSE reassembly due to alloc_hint capacity mismatch",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-122",
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"lang": "en",
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"description": "CWE-122: Heap-based Buffer Overflow",
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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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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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/FreeRDP/FreeRDP/security/advisories/GHSA-9gxm-3mf5-f5cx",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9gxm-3mf5-f5cx"
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},
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{
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"name": "https://github.com/FreeRDP/FreeRDP/pull/12873",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/FreeRDP/FreeRDP/pull/12873"
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},
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{
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"name": "https://github.com/FreeRDP/FreeRDP/commit/9f2da52c2341cc14a96ad12e69c5b83d0bcd8b5a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/FreeRDP/FreeRDP/commit/9f2da52c2341cc14a96ad12e69c5b83d0bcd8b5a"
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},
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{
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"name": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.0"
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}
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],
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"affected": [
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{
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"vendor": "FreeRDP",
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"product": "FreeRDP",
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"versions": [
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{
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"version": "< 3.27.0",
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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": "2026-08-19T17:50:30.158Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, rpc_client_recv_fragment in libfreerdp/core/gateway/rpc_client.c ensures the response reassembly stream capacity using only the server-declared alloc_hint rather than the actual StubLength about to be written. A malicious TS Gateway can send a PTYPE_RESPONSE with a small alloc_hint and a much larger frag_length, causing Stream_Write to copy attacker-controlled stub data beyond the 4096-byte pdu->s buffer. This can crash the client and may permit code execution through heap corruption. This issue is fixed in version 3.27.0."
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}
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],
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"source": {
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"advisory": "GHSA-9gxm-3mf5-f5cx",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-55194",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-08-21T03:55:49.884406Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-27T16:25:00.719Z"
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}
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}
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]
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}
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} |