128 lines
5.4 KiB
JSON
128 lines
5.4 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-2026-42859",
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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": "2026-04-30T16:44:48.379Z",
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"datePublished": "2026-05-11T17:36:08.143Z",
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"dateUpdated": "2026-05-11T18:22:03.144Z"
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},
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"containers": {
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"cna": {
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"title": "Neat VNC: Buffer overflow due to oversized RSA public keys",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-120",
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"lang": "en",
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"description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic 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": "NONE",
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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": 8.1,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
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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/any1/neatvnc/security/advisories/GHSA-567c-gpv8-qh9h",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/any1/neatvnc/security/advisories/GHSA-567c-gpv8-qh9h"
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},
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{
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"name": "https://github.com/any1/neatvnc/commit/1f6cd6b75cc167fed3a19a9d1552a1f662f6b337",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/any1/neatvnc/commit/1f6cd6b75cc167fed3a19a9d1552a1f662f6b337"
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}
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],
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"affected": [
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{
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"vendor": "any1",
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"product": "neatvnc",
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"versions": [
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{
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"version": "< 0.9.6",
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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": "2026-05-11T17:36:08.143Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Neat VNC is a VNC server library. Prior to 0.9.6, a pre-authentication stack buffer overflow exists in neatvnc in the RSA-AES security type handler. An unauthenticated remote attacker who can reach the VNC listening socket can send a crafted security type 5 (RSA-AES) or security type 129 (RSA-AES-256) handshake with an oversized client RSA public key, causing rsa_aes_send_challenge in src/auth/rsa-aes.c to overflow a 1024-byte on-stack buffer when encrypting the server challenge. This results in at least a denial of service via server crash. This vulnerability is fixed in 0.9.6."
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}
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],
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"source": {
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"advisory": "GHSA-567c-gpv8-qh9h",
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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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"timestamp": "2026-05-11T18:21:36.453865Z",
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"id": "CVE-2026-42859",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2026-05-11T18:22:03.144Z"
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}
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}
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]
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}
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} |