gsd-2002-20001
Vulnerability from gsd
Modified
2023-12-13 01:24
Details
The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2002-20001",
"description": "The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.",
"id": "GSD-2002-20001",
"references": [
"https://www.suse.com/security/cve/CVE-2002-20001.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2002-20001"
],
"details": "The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.",
"id": "GSD-2002-20001",
"modified": "2023-12-13T01:24:08.100330Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2002-20001",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/Balasys/dheater",
"refsource": "MISC",
"url": "https://github.com/Balasys/dheater"
},
{
"name": "https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol",
"refsource": "MISC",
"url": "https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol"
},
{
"name": "https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/",
"refsource": "MISC",
"url": "https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/"
},
{
"name": "https://github.com/mozilla/ssl-config-generator/issues/162",
"refsource": "MISC",
"url": "https://github.com/mozilla/ssl-config-generator/issues/162"
},
{
"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf",
"refsource": "MISC",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf"
},
{
"name": "https://www.suse.com/support/kb/doc/?id=000020510",
"refsource": "MISC",
"url": "https://www.suse.com/support/kb/doc/?id=000020510"
},
{
"name": "https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/",
"refsource": "MISC",
"url": "https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/"
},
{
"name": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt",
"refsource": "MISC",
"url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt"
},
{
"name": "https://support.f5.com/csp/article/K83120834",
"refsource": "MISC",
"url": "https://support.f5.com/csp/article/K83120834"
},
{
"name": "https://dheatattack.com",
"refsource": "MISC",
"url": "https://dheatattack.com"
},
{
"name": "https://gitlab.com/dheatattack/dheater",
"refsource": "MISC",
"url": "https://gitlab.com/dheatattack/dheater"
},
{
"name": "https://dheatattack.gitlab.io/",
"refsource": "MISC",
"url": "https://dheatattack.gitlab.io/"
},
{
"name": "https://ieeexplore.ieee.org/document/10374117",
"refsource": "MISC",
"url": "https://ieeexplore.ieee.org/document/10374117"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:balasys:dheater:-:*:*:*:*:*:*:*",
"matchCriteriaId": "DE3F88FC-F039-433B-9035-88F1691DA082",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "065280B2-6EC1-4721-B3D7-EDE44ED4F5BD",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:scalance_w1750d:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FBC30055-239F-4BB1-B2D1-E5E35F0D8911",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:suse:linux_enterprise_server:11:-:*:*:*:*:*:*",
"matchCriteriaId": "F13F07CC-739B-465C-9184-0E9D708BD4C7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*",
"matchCriteriaId": "15FC9014-BD85-4382-9D04-C0703E901D7A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:suse:linux_enterprise_server:15:*:*:*:*:*:*:*",
"matchCriteriaId": "70A029CD-2AC4-4877-B1A4-5C72B351BA27",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CE73DAA2-9CCA-4BD6-B11A-9326F79D9ABB",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "475E283C-8F3C-4051-B9E8-349845F8C528",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
"matchCriteriaId": "956AC9F3-2042-4C21-A5E4-D2D4334D2FC3",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E17DBD3E-F5AC-4A35-81E0-C4804CAD78F9",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "346B71B1-D583-4463-ADF8-BEE700B0CA3A",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B2AA25BA-72C5-48A9-BDBC-CA108208011F",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*",
"matchCriteriaId": "308B0070-6716-4754-A5E4-C3D70CAB376B",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8F26AB06-7FEB-4A56-B722-DBDEEE628DB8",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EE48C9C9-6B84-4A4A-963D-6DFE0C2FB312",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
"matchCriteriaId": "878CD8E6-6B9B-431D-BD15-F954C7B8076F",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4D9DB9B9-2959-448E-9B59-C873584A0E11",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6AF04191-019B-4BC9-A9A7-7B7AA9B5B7D1",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F62D754D-A4A1-4093-AB42-9F51C19976CA",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "90084CD6-FA4B-4305-BC65-58237BAF714E",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BC9D4626-915F-42E5-81E0-6F8271084773",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7056F1FA-24AC-4D9F-8DDC-B3CA4740BF5E",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_service_proxy:1.6.0:*:*:*:*:kubernetes:*:*",
"matchCriteriaId": "BC5AC8C7-92BA-48D4-81A1-F5323DA952A9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E48AC50D-19B3-4E97-ADD2-B661BD891ED7",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B13C4244-BE15-4F2C-BBBA-35072571B041",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C1B4FBF6-C23A-4BD2-ADFB-9617C03B603A",
"versionEndIncluding": "17.1.0",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-iq_centralized_management:*:*:*:*:*:*:*:*",
"matchCriteriaId": "360D8842-2C55-450F-9AFA-09CA34B12598",
"versionEndIncluding": "8.2.0",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-iq_centralized_management:7.1.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DA0B396A-B5CE-4337-A33A-EF58C4589CB3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:f5os-a:1.3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "C4A3C86A-CA2F-4AC8-A43E-765829A96147",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:f5os-a:1.3.1:*:*:*:*:*:*:*",
"matchCriteriaId": "03E01235-F9B0-4CCF-AA08-FECF61C62B21",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:f5os-c:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3BFAE8EC-9A5F-421D-990D-B6D454DECAEC",
"versionEndIncluding": "1.3.2",
"versionStartIncluding": "1.3.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:f5os-c:1.5.0:*:*:*:*:*:*:*",
"matchCriteriaId": "BC3EDB8D-5C16-49DF-BE48-C83744AD7788",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:f5os-c:1.5.1:*:*:*:*:*:*:*",
"matchCriteriaId": "12FEEABD-9A4A-4A33-9B74-7B053352C47D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.1.0:*:*:*:*:*:*:*",
"matchCriteriaId": "42836A1C-81BB-4F80-9E32-EEE0DAA18D26",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.2.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DA4D5EC6-8099-4D0A-AD6F-BA3B37C2EBD8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3B3AD582-9909-4FF5-B541-571F18E22356",
"versionEndExcluding": "10.06.0180",
"versionStartIncluding": "10.06.0000",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*",
"matchCriteriaId": "21F81EB2-3916-4DC6-9600-B7FD17906B53",
"versionEndExcluding": "10.07.0030",
"versionStartIncluding": "10.07.0000",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*",
"matchCriteriaId": "71284AA8-9E0E-4B2F-8464-B49E1D6965B5",
"versionEndExcluding": "10.08.0010",
"versionStartIncluding": "10.08.0000",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F059E5A9-E613-4BE1-BF61-C477B3441175",
"versionEndExcluding": "10.09.0002",
"versionStartIncluding": "10.09.0000",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_4100i:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B7C2B56C-203F-4290-BCE7-8BD751DF9CEF",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6100:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FF1DD310-3D31-4204-92E0-70C33EE44F08",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6200f:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FCD1A83B-109B-4596-AE37-706751E2B57D",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6200m:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1218AAA5-01ED-4D89-A7AE-A600356ABD46",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6300f:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4D6F748F-89E9-45FB-8BE7-2201E5EB2755",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6300m:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8066A871-2683-4F74-9750-E73BF004209F",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6405:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D118A9A6-BBA4-4149-AE0D-1DA2EB45B53F",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_6410:-:*:*:*:*:*:*:*",
"matchCriteriaId": "790C5E7A-3405-4873-83E8-4D9C0FEC5E6D",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8320:-:*:*:*:*:*:*:*",
"matchCriteriaId": "10B5F18A-28B0-49B4-8374-C681C2B48D2A",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8325-32c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "59B7E2D3-0B72-4A78-AEFA-F106FAD38156",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8325-48y8c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7E87A92B-4EE5-4235-A0DA-195F27841DBB",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-12c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6BC24E52-13C0-402F-9ABF-A1DE51719AEF",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-16y2c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "76EF979E-061A-42A3-B161-B835E92ED180",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-24xf2c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "DE04919C-9289-4FB3-938F-F8BB15EC6A74",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-32y4c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B630C64B-C474-477D-A80B-A0FB73ACCC49",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-48xt4c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "53ABE8B8-A4F6-400B-A893-314BE24D06B8",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8360-48y6c:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C44383CC-3751-455E-B1AB-39B16F40DC76",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:hpe:aruba_cx_8400:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B25A9CD2-5E5F-4BDB-8707-5D6941411A2B",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:stormshield:stormshield_management_center:*:*:*:*:*:*:*:*",
"matchCriteriaId": "62A933C5-C56E-485C-AD49-3B6A2C329131",
"versionEndExcluding": "3.3.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F7387F52-013D-432D-87D8-5D3ABD472C9E",
"versionEndExcluding": "4.3.16",
"versionStartIncluding": "2.7.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C8A23A5D-928A-4225-9C93-31E5DFE215A7",
"versionEndExcluding": "4.6.3",
"versionStartIncluding": "4.4.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE."
},
{
"lang": "es",
"value": "El Protocolo de Acuerdo de Claves Diffie-Hellman permite a atacantes remotos (del lado del cliente) enviar n\u00fameros arbitrarios que en realidad no son claves p\u00fablicas, y desencadenar costosos c\u00e1lculos de exponenciaci\u00f3n modular DHE del lado del servidor, tambi\u00e9n se conoce como un ataque D(HE)ater. El cliente necesita muy pocos recursos de CPU y ancho de banda de red. El ataque puede ser m\u00e1s perturbador en los casos en los que un cliente puede exigir al servidor que seleccione su mayor tama\u00f1o de clave soportado. El escenario b\u00e1sico del ataque es que el cliente debe afirmar que s\u00f3lo puede comunicarse con DHE, y el servidor debe estar configurado para permitir DHE"
}
],
"id": "CVE-2002-20001",
"lastModified": "2024-04-23T07:15:41.853",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-11-11T19:15:07.380",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://dheatattack.com"
},
{
"source": "cve@mitre.org",
"url": "https://dheatattack.gitlab.io/"
},
{
"source": "cve@mitre.org",
"tags": [
"Product"
],
"url": "https://github.com/Balasys/dheater"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking"
],
"url": "https://github.com/mozilla/ssl-config-generator/issues/162"
},
{
"source": "cve@mitre.org",
"url": "https://gitlab.com/dheatattack/dheater"
},
{
"source": "cve@mitre.org",
"url": "https://ieeexplore.ieee.org/document/10374117"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://support.f5.com/csp/article/K83120834"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking"
],
"url": "https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Technical Description"
],
"url": "https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.suse.com/support/kb/doc/?id=000020510"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.