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{
"id" : "CVE-2023-28998" ,
"sourceIdentifier" : "security-advisories@github.com" ,
"published" : "2023-04-04T13:15:08.937" ,
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"lastModified" : "2023-11-07T04:10:59.707" ,
"vulnStatus" : "Modified" ,
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"descriptions" : [
{
"lang" : "en" ,
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"value" : "The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files.\u200b Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available."
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}
] ,
"metrics" : {
"cvssMetricV31" : [
{
"source" : "nvd@nist.gov" ,
"type" : "Primary" ,
"cvssData" : {
"version" : "3.1" ,
"vectorString" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N" ,
"attackVector" : "NETWORK" ,
"attackComplexity" : "LOW" ,
"privilegesRequired" : "HIGH" ,
"userInteraction" : "REQUIRED" ,
"scope" : "UNCHANGED" ,
"confidentialityImpact" : "HIGH" ,
"integrityImpact" : "HIGH" ,
"availabilityImpact" : "NONE" ,
"baseScore" : 6.1 ,
"baseSeverity" : "MEDIUM"
} ,
"exploitabilityScore" : 0.9 ,
"impactScore" : 5.2
} ,
{
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"source" : "a0819718-46f1-4df5-94e2-005712e83aaa" ,
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"type" : "Secondary" ,
"cvssData" : {
"version" : "3.1" ,
"vectorString" : "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N" ,
"attackVector" : "PHYSICAL" ,
"attackComplexity" : "LOW" ,
"privilegesRequired" : "HIGH" ,
"userInteraction" : "REQUIRED" ,
"scope" : "CHANGED" ,
"confidentialityImpact" : "HIGH" ,
"integrityImpact" : "HIGH" ,
"availabilityImpact" : "NONE" ,
"baseScore" : 6.7 ,
"baseSeverity" : "MEDIUM"
} ,
"exploitabilityScore" : 0.4 ,
"impactScore" : 5.8
}
]
} ,
"weaknesses" : [
{
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"source" : "a0819718-46f1-4df5-94e2-005712e83aaa" ,
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"type" : "Primary" ,
"description" : [
{
"lang" : "en" ,
"value" : "CWE-325"
}
]
}
] ,
"configurations" : [
{
"nodes" : [
{
"operator" : "OR" ,
"negate" : false ,
"cpeMatch" : [
{
"vulnerable" : true ,
"criteria" : "cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*" ,
"versionStartIncluding" : "3.0.0" ,
"versionEndExcluding" : "3.6.5" ,
"matchCriteriaId" : "F1D69443-506B-4A0C-92F4-880BA513B520"
}
]
}
]
}
] ,
"references" : [
{
"url" : "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf" ,
"source" : "security-advisories@github.com" ,
"tags" : [
"Exploit" ,
"Technical Description" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://github.com/nextcloud/desktop/pull/5323" ,
"source" : "security-advisories@github.com" ,
"tags" : [
"Patch" ,
"Vendor Advisory"
]
} ,
{
"url" : "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr" ,
"source" : "security-advisories@github.com" ,
"tags" : [
"Vendor Advisory"
]
}
]
}