2023-04-24 12:24:31 +02:00
{
"id" : "CVE-2021-33500" ,
"sourceIdentifier" : "cve@mitre.org" ,
"published" : "2021-05-21T20:15:07.723" ,
2024-12-08 03:06:42 +00:00
"lastModified" : "2024-11-21T06:08:57.423" ,
"vulnStatus" : "Modified" ,
2024-07-14 02:06:08 +00:00
"cveTags" : [ ] ,
2023-04-24 12:24:31 +02:00
"descriptions" : [
{
"lang" : "en" ,
"value" : "PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other platforms for similar reasons."
} ,
{
"lang" : "es" ,
"value" : "PuTTY versiones anteriores a 0.75, en Windows permite a servidores remotos causar una denegaci\u00f3n de servicio (colgar la GUI de Windows) al indicar a la ventana de PuTTY que cambie su t\u00edtulo repetidamente a gran velocidad, lo que resulta en muchas llamadas a SetWindowTextA o SetWindowTextW. NOTA: la misma metodolog\u00eda de ataque puede afectar a algunas interfaces gr\u00e1ficas de usuario en Linux y otras plataformas por razones similares"
}
] ,
"metrics" : {
"cvssMetricV31" : [
{
2024-12-08 03:06:42 +00:00
"source" : "cve@mitre.org" ,
"type" : "Secondary" ,
2023-04-24 12:24:31 +02:00
"cvssData" : {
"version" : "3.1" ,
"vectorString" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" ,
2024-12-08 03:06:42 +00:00
"baseScore" : 7.5 ,
"baseSeverity" : "HIGH" ,
2023-04-24 12:24:31 +02:00
"attackVector" : "NETWORK" ,
"attackComplexity" : "LOW" ,
"privilegesRequired" : "NONE" ,
"userInteraction" : "NONE" ,
"scope" : "UNCHANGED" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
2024-12-08 03:06:42 +00:00
"availabilityImpact" : "HIGH"
2023-04-24 12:24:31 +02:00
} ,
"exploitabilityScore" : 3.9 ,
"impactScore" : 3.6
} ,
{
2024-12-08 03:06:42 +00:00
"source" : "nvd@nist.gov" ,
"type" : "Primary" ,
2023-04-24 12:24:31 +02:00
"cvssData" : {
"version" : "3.1" ,
"vectorString" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" ,
2024-12-08 03:06:42 +00:00
"baseScore" : 7.5 ,
"baseSeverity" : "HIGH" ,
2023-04-24 12:24:31 +02:00
"attackVector" : "NETWORK" ,
"attackComplexity" : "LOW" ,
"privilegesRequired" : "NONE" ,
"userInteraction" : "NONE" ,
"scope" : "UNCHANGED" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
2024-12-08 03:06:42 +00:00
"availabilityImpact" : "HIGH"
2023-04-24 12:24:31 +02:00
} ,
"exploitabilityScore" : 3.9 ,
"impactScore" : 3.6
}
] ,
"cvssMetricV2" : [
{
"source" : "nvd@nist.gov" ,
"type" : "Primary" ,
"cvssData" : {
"version" : "2.0" ,
"vectorString" : "AV:N/AC:L/Au:N/C:N/I:N/A:P" ,
2024-12-08 03:06:42 +00:00
"baseScore" : 5.0 ,
2023-04-24 12:24:31 +02:00
"accessVector" : "NETWORK" ,
"accessComplexity" : "LOW" ,
"authentication" : "NONE" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
2024-12-08 03:06:42 +00:00
"availabilityImpact" : "PARTIAL"
2023-04-24 12:24:31 +02:00
} ,
"baseSeverity" : "MEDIUM" ,
"exploitabilityScore" : 10.0 ,
"impactScore" : 2.9 ,
"acInsufInfo" : false ,
"obtainAllPrivilege" : false ,
"obtainUserPrivilege" : false ,
"obtainOtherPrivilege" : false ,
"userInteractionRequired" : false
}
]
} ,
"weaknesses" : [
{
"source" : "nvd@nist.gov" ,
"type" : "Primary" ,
"description" : [
{
"lang" : "en" ,
"value" : "NVD-CWE-noinfo"
}
]
}
] ,
"configurations" : [
{
"operator" : "AND" ,
"nodes" : [
{
"operator" : "OR" ,
"negate" : false ,
"cpeMatch" : [
{
"vulnerable" : true ,
"criteria" : "cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*" ,
"versionEndExcluding" : "0.75" ,
"matchCriteriaId" : "1C69E11C-8272-4BBA-924C-1EC3A3FA01CA"
}
]
} ,
{
"operator" : "OR" ,
"negate" : false ,
"cpeMatch" : [
{
"vulnerable" : false ,
"criteria" : "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*" ,
"matchCriteriaId" : "A2572D17-1DE6-457B-99CC-64AFD54487EA"
}
]
}
]
}
] ,
"references" : [
{
"url" : "https://docs.ssh-mitm.at/puttydos.html" ,
"source" : "cve@mitre.org" ,
"tags" : [
"Exploit" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py" ,
"source" : "cve@mitre.org" ,
"tags" : [
"Exploit" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html" ,
"source" : "cve@mitre.org" ,
"tags" : [
"Release Notes" ,
"Third Party Advisory"
]
2024-12-08 03:06:42 +00:00
} ,
{
"url" : "https://docs.ssh-mitm.at/puttydos.html" ,
"source" : "af854a3a-2127-422b-91ae-364da2661108" ,
"tags" : [
"Exploit" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py" ,
"source" : "af854a3a-2127-422b-91ae-364da2661108" ,
"tags" : [
"Exploit" ,
"Third Party Advisory"
]
} ,
{
"url" : "https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html" ,
"source" : "af854a3a-2127-422b-91ae-364da2661108" ,
"tags" : [
"Release Notes" ,
"Third Party Advisory"
]
2023-04-24 12:24:31 +02:00
}
]
}