CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5423 vulnerabilities reference this CWE, most recent first.
GHSA-R24R-M7FF-GHQ2
Vulnerability from github – Published: 2024-06-24 18:31 – Updated: 2024-06-26 15:31An issue was discovered in VirtoSoftware Virto Bulk File Download 5.5.44 for SharePoint 2019. The Virto.SharePoint.FileDownloader/Api/Download.ashx isCompleted method allows an NTLMv2 hash leak via a UNC share pathname in the path parameter.
{
"affected": [],
"aliases": [
"CVE-2024-33881"
],
"database_specific": {
"cwe_ids": [
"CWE-200",
"CWE-22",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-24T17:15:10Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in VirtoSoftware Virto Bulk File Download 5.5.44 for SharePoint 2019. The Virto.SharePoint.FileDownloader/Api/Download.ashx isCompleted method allows an NTLMv2 hash leak via a UNC share pathname in the path parameter.",
"id": "GHSA-r24r-m7ff-ghq2",
"modified": "2024-06-26T15:31:01Z",
"published": "2024-06-24T18:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33881"
},
{
"type": "WEB",
"url": "https://docs.virtosoftware.com/v/virto-security-frequently-asked-questions-faq"
},
{
"type": "WEB",
"url": "https://download.virtosoftware.com/Manuals/nu_ncsc_virto_one_bulk_file_download_v5.4.4_pt_disclosure.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-R27R-5FWH-VXQW
Vulnerability from github – Published: 2024-04-17 00:30 – Updated: 2024-04-26 09:30Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.36 and prior and 8.3.0 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2024-21062"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-16T22:15:24Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.36 and prior and 8.3.0 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-r27r-5fwh-vxqw",
"modified": "2024-04-26T09:30:34Z",
"published": "2024-04-17T00:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21062"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240426-0013"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2024.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R2CF-532C-V5V7
Vulnerability from github – Published: 2022-05-17 00:23 – Updated: 2022-05-17 00:23In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator software version 12.0.0 - 12.1.2, 11.6.0 - 11.6.1, 11.4.0 - 11.5.4, 11.2.1, when ConfigSync is configured, attackers on adjacent networks may be able to bypass the TLS protections usually used to encrypted and authenticate connections to mcpd. This vulnerability may allow remote attackers to cause a denial-of-service (DoS) attack via resource exhaustion.
{
"affected": [],
"aliases": [
"CVE-2017-6161"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-10-27T14:29:00Z",
"severity": "MODERATE"
},
"details": "In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator software version 12.0.0 - 12.1.2, 11.6.0 - 11.6.1, 11.4.0 - 11.5.4, 11.2.1, when ConfigSync is configured, attackers on adjacent networks may be able to bypass the TLS protections usually used to encrypted and authenticate connections to mcpd. This vulnerability may allow remote attackers to cause a denial-of-service (DoS) attack via resource exhaustion.",
"id": "GHSA-r2cf-532c-v5v7",
"modified": "2022-05-17T00:23:25Z",
"published": "2022-05-17T00:23:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6161"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K62279530"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/101636"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039675"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039676"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R2FF-RRFQ-R548
Vulnerability from github – Published: 2024-02-23 21:30 – Updated: 2024-02-23 21:30Due to an allocation of resources without limits, an uncontrolled resource consumption vulnerability exists in Silicon Labs Ember ZNet SDK prior to v7.4.0.0 (delivered as part of Silicon Labs Gecko SDK v4.4.0) which may enable attackers to trigger a bus fault and crash of the device, requiring a reboot in order to rejoin the network.
{
"affected": [],
"aliases": [
"CVE-2023-51393"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-23T20:15:51Z",
"severity": "MODERATE"
},
"details": "\nDue to an allocation of resources without limits, an uncontrolled resource consumption vulnerability exists in Silicon Labs Ember ZNet SDK prior to v7.4.0.0 (delivered as part of Silicon Labs Gecko SDK v4.4.0) which may enable attackers to trigger a bus fault and crash of the device, requiring a reboot in order to rejoin the network.",
"id": "GHSA-r2ff-rrfq-r548",
"modified": "2024-02-23T21:30:47Z",
"published": "2024-02-23T21:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51393"
},
{
"type": "WEB",
"url": "https://community.silabs.com/068Vm000001NaAM"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-R2MR-X4H2-9CHR
Vulnerability from github – Published: 2026-01-21 00:31 – Updated: 2026-06-30 03:35Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9; Oracle GraalVM Enterprise Edition: 21.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2026-21945"
],
"database_specific": {
"cwe_ids": [
"CWE-295",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-20T22:15:57Z",
"severity": "HIGH"
},
"details": "Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9; Oracle GraalVM Enterprise Edition: 21.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-r2mr-x4h2-9chr",
"modified": "2026-06-30T03:35:29Z",
"published": "2026-01-21T00:31:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21945"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujan2026.html"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21945.json"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429927"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-21945"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4832"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:1606"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0933"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0932"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0931"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0928"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0927"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0901"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0899"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0897"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0895"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0848"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0847"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R2PG-W96P-PCPJ
Vulnerability from github – Published: 2022-05-17 02:40 – Updated: 2023-07-31 19:39The Content-Encoding HTTP header feature in ws-xmlrpc 3.1.3 as used in Apache Archiva allows remote attackers to cause a denial of service (resource consumption) by decompressing a large file containing zeroes.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.xmlrpc:xmlrpc-common"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.1.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2016-5004"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-31T19:39:55Z",
"nvd_published_at": "2017-06-06T18:29:00Z",
"severity": "MODERATE"
},
"details": "The Content-Encoding HTTP header feature in ws-xmlrpc 3.1.3 as used in Apache Archiva allows remote attackers to cause a denial of service (resource consumption) by decompressing a large file containing zeroes.",
"id": "GHSA-r2pg-w96p-pcpj",
"modified": "2023-07-31T19:39:55Z",
"published": "2022-05-17T02:40:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-5004"
},
{
"type": "WEB",
"url": "https://github.com/0ang3el/unsafe-xmlrpc"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20160716070844/http://www.securitytracker.com/id/1036294"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20171111065719/http://www.securityfocus.com/bid/91736"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20171114185236/https://0ang3el.blogspot.in/2016/07/beware-of-ws-xmlrpc-library-in-your.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/07/12/5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "ws-xmlrpc DoS Vulnerability"
}
GHSA-R2RG-JMVF-RF47
Vulnerability from github – Published: 2026-03-04 18:31 – Updated: 2026-03-04 18:31A technique has been identified that adapts a known port-stealing method to Wi-Fi environments that use multiple BSSIDs. By leveraging the relationship between BSSIDs and their associated virtual ports, an attacker could potentially bypass inter-BSSID isolation controls. Successful exploitation may enable an attacker to redirect and intercept the victim's network traffic, potentially resulting in eavesdropping, session hijacking, or denial of service.
{
"affected": [],
"aliases": [
"CVE-2026-23809"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-04T17:16:18Z",
"severity": "MODERATE"
},
"details": "A technique has been identified that adapts a known port-stealing method to Wi-Fi environments that use multiple BSSIDs. By leveraging the relationship between BSSIDs and their associated virtual ports, an attacker could potentially bypass inter-BSSID isolation controls. Successful exploitation may enable an attacker to redirect and intercept the victim\u0027s network traffic, potentially resulting in eavesdropping, session hijacking, or denial of service.",
"id": "GHSA-r2rg-jmvf-rf47",
"modified": "2026-03-04T18:31:53Z",
"published": "2026-03-04T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23809"
},
{
"type": "WEB",
"url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05026en_us\u0026docLocale=en_US"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-R326-PP3G-7CQ4
Vulnerability from github – Published: 2025-12-29 18:30 – Updated: 2025-12-31 18:30An issue was discovered in function d_unqualified_name in file cp-demangle.c in BinUtils 2.26 allowing attackers to cause a denial of service via crafted PE file.
{
"affected": [],
"aliases": [
"CVE-2025-66861"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-29T17:15:45Z",
"severity": "LOW"
},
"details": "An issue was discovered in function d_unqualified_name in file cp-demangle.c in BinUtils 2.26 allowing attackers to cause a denial of service via crafted PE file.",
"id": "GHSA-r326-pp3g-7cq4",
"modified": "2025-12-31T18:30:23Z",
"published": "2025-12-29T18:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66861"
},
{
"type": "WEB",
"url": "https://github.com/caozhzh/CRGF-Vul/blob/main/cxxfilt/crash1.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-R32R-3977-CGC3
Vulnerability from github – Published: 2018-10-18 16:50 – Updated: 2022-09-13 23:34JBoss KeyCloak versions prior to 1.0.3.Final allow remote attackers to create a denial of service (resource consumption) by supplying a large value in the size parameter to auth/qrcode, related to QR code generation.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.keycloak:keycloak-core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2014-3651"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:53:24Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "JBoss KeyCloak versions prior to 1.0.3.Final allow remote attackers to create a denial of service (resource consumption) by supplying a large value in the size parameter to auth/qrcode, related to QR code generation.",
"id": "GHSA-r32r-3977-cgc3",
"modified": "2022-09-13T23:34:44Z",
"published": "2018-10-18T16:50:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-3651"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1144278"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-r32r-3977-cgc3"
},
{
"type": "WEB",
"url": "https://issues.jboss.org/browse/KEYCLOAK-699"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Keycloak vulnerable to uncontrolled resource consumption"
}
GHSA-R33M-95PX-PX34
Vulnerability from github – Published: 2025-07-15 21:31 – Updated: 2025-07-15 21:31Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).
{
"affected": [],
"aliases": [
"CVE-2025-50100"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-15T20:15:46Z",
"severity": "LOW"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).",
"id": "GHSA-r33m-95px-px34",
"modified": "2025-07-15T21:31:42Z",
"published": "2025-07-15T21:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50100"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2025.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
Mitigation
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
Mitigation
- Mitigation of resource exhaustion attacks requires that the target system either:
- The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
- The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- recognizes the attack and denies that user further access for a given amount of time, or
- uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Mitigation
Ensure that protocols have specific limits of scale placed on them.
Mitigation
Ensure that all failures in resource allocation place the system into a safe posture.
CAPEC-147: XML Ping of the Death
An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
CAPEC-227: Sustained Client Engagement
An adversary attempts to deny legitimate users access to a resource by continually engaging a specific resource in an attempt to keep the resource tied up as long as possible. The adversary's primary goal is not to crash or flood the target, which would alert defenders; rather it is to repeatedly perform actions or abuse algorithmic flaws such that a given resource is tied up and not available to a legitimate user. By carefully crafting a requests that keep the resource engaged through what is seemingly benign requests, legitimate users are limited or completely denied access to the resource.
CAPEC-492: Regular Expression Exponential Blowup
An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.