177 lines
6.9 KiB
JSON
177 lines
6.9 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-2026-77021",
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"assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
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"state": "PUBLISHED",
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"assignerShortName": "Checkmk",
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"dateReserved": "2026-08-20T08:31:22.429Z",
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"datePublished": "2026-09-21T10:57:37.433Z",
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"dateUpdated": "2026-09-21T19:40:26.202Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "Checkmk",
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"vendor": "Checkmk GmbH",
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"versions": [
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{
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"lessThan": "2.5.0p14",
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"status": "affected",
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"version": "2.5.0",
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"versionType": "semver"
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},
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{
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"lessThan": "2.4.0p37",
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"status": "affected",
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"version": "2.4.0",
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"versionType": "semver"
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},
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{
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"lessThan": "2.3.0p51",
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"status": "affected",
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"version": "2.3.0",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.2.0",
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"versionType": "semver"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "Sven Jäger (SySS GmbH)"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Improper handling of highly compressed data (data amplification) in Checkmk <2.5.0p14, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an attacker who controls a host registered for push mode to exhaust the memory of the agent receiver by sending a small zlib compressed payload that decompresses to an arbitrary size."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-197",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-197: Exponential Data Expansion"
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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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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-409",
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"description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)",
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"lang": "en",
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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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"providerMetadata": {
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"orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
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"shortName": "Checkmk",
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"dateUpdated": "2026-09-21T10:57:37.433Z"
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},
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"references": [
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{
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"url": "https://checkmk.com/werk/22116",
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"tags": [
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"vendor-advisory"
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]
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}
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],
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"title": "Missing decompression size limit in agent receiver allows memory exhaustion via push agent data",
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.5.0",
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"versionEndExcluding": "2.5.0p14"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.4.0",
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"versionEndExcluding": "2.4.0p37"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.3.0",
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"versionEndExcluding": "2.3.0p51"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*"
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}
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]
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}
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]
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}
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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-2026-77021",
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"role": "CISA Coordinator",
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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": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-09-21T14:40:45.554408Z"
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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": "2026-09-21T19:40:26.202Z"
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}
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}
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]
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}
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} |