CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5412 vulnerabilities reference this CWE, most recent first.
GHSA-JFMJ-5V4G-7637
Vulnerability from github – Published: 2024-07-09 00:31 – Updated: 2024-07-09 17:25A Denial of Service (DoS) vulnerability exists in the jaraco/zipp library, affecting all versions prior to 3.19.1. The vulnerability is triggered when processing a specially crafted zip file that leads to an infinite loop. This issue also impacts the zipfile module of CPython, as features from the third-party zipp library are later merged into CPython, and the affected code is identical in both projects. The infinite loop can be initiated through the use of functions affecting the Path module in both zipp and zipfile, such as joinpath, the overloaded division operator, and iterdir. Although the infinite loop is not resource exhaustive, it prevents the application from responding. The vulnerability was addressed in version 3.19.1 of jaraco/zipp.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "zipp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.19.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-5569"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2024-07-09T17:25:54Z",
"nvd_published_at": "2024-07-09T00:15:02Z",
"severity": "MODERATE"
},
"details": "A Denial of Service (DoS) vulnerability exists in the jaraco/zipp library, affecting all versions prior to 3.19.1. The vulnerability is triggered when processing a specially crafted zip file that leads to an infinite loop. This issue also impacts the zipfile module of CPython, as features from the third-party zipp library are later merged into CPython, and the affected code is identical in both projects. The infinite loop can be initiated through the use of functions affecting the `Path` module in both zipp and zipfile, such as `joinpath`, the overloaded division operator, and `iterdir`. Although the infinite loop is not resource exhaustive, it prevents the application from responding. The vulnerability was addressed in version 3.19.1 of jaraco/zipp.",
"id": "GHSA-jfmj-5v4g-7637",
"modified": "2024-07-09T17:25:54Z",
"published": "2024-07-09T00:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5569"
},
{
"type": "WEB",
"url": "https://github.com/jaraco/zipp/commit/fd604bd34f0343472521a36da1fbd22e793e14fd"
},
{
"type": "PACKAGE",
"url": "https://github.com/jaraco/zipp"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/be898306-11f9-46b4-b28c-f4c4aa4ffbae"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "zipp Denial of Service vulnerability"
}
GHSA-JFWW-45P8-3V7V
Vulnerability from github – Published: 2023-11-29 21:30 – Updated: 2023-12-01 00:31An issue in the box_equal function in openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) after running a SELECT statement.
{
"affected": [],
"aliases": [
"CVE-2023-48951"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-29T20:15:08Z",
"severity": "HIGH"
},
"details": "An issue in the box_equal function in openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) after running a SELECT statement.",
"id": "GHSA-jfww-45p8-3v7v",
"modified": "2023-12-01T00:31:00Z",
"published": "2023-11-29T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48951"
},
{
"type": "WEB",
"url": "https://github.com/openlink/virtuoso-opensource/issues/1177"
}
],
"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-JG6X-RH3W-6PP3
Vulnerability from github – Published: 2022-08-12 00:01 – Updated: 2025-10-20 18:30In Varnish Cache 7.0.0, 7.0.1, 7.0.2, and 7.1.0, it is possible to cause the Varnish Server to assert and automatically restart through forged HTTP/1 backend responses. An attack uses a crafted reason phrase of the backend response status line. This is fixed in 7.0.3 and 7.1.1.
{
"affected": [],
"aliases": [
"CVE-2022-38150"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-11T01:15:00Z",
"severity": "HIGH"
},
"details": "In Varnish Cache 7.0.0, 7.0.1, 7.0.2, and 7.1.0, it is possible to cause the Varnish Server to assert and automatically restart through forged HTTP/1 backend responses. An attack uses a crafted reason phrase of the backend response status line. This is fixed in 7.0.3 and 7.1.1.",
"id": "GHSA-jg6x-rh3w-6pp3",
"modified": "2025-10-20T18:30:29Z",
"published": "2022-08-12T00:01:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38150"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4KVVCIQVINQQ2D7ORNARSYALMJUMP3I"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW3X4PEKC5C736SCKE2UG3Y7JWKMD2K6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2BUKFICLZBXESLQ3MXMIG3G52RZURFK"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M4KVVCIQVINQQ2D7ORNARSYALMJUMP3I"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TW3X4PEKC5C736SCKE2UG3Y7JWKMD2K6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2BUKFICLZBXESLQ3MXMIG3G52RZURFK"
},
{
"type": "WEB",
"url": "https://varnish-cache.org/security/VSV00009.html"
}
],
"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-JGFP-53C3-624W
Vulnerability from github – Published: 2025-02-13 18:32 – Updated: 2025-12-20 03:12A security issue was discovered in Kubernetes where a large number of container checkpoint requests made to the unauthenticated kubelet read-only HTTP endpoint may cause a Node Denial of Service by filling the Node's disk.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes"
},
"ranges": [
{
"events": [
{
"introduced": "1.32.0"
},
{
"fixed": "1.32.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes"
},
"ranges": [
{
"events": [
{
"introduced": "1.31.0"
},
{
"fixed": "1.31.6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes"
},
"ranges": [
{
"events": [
{
"introduced": "1.30.0"
},
{
"fixed": "1.30.10"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.29.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-0426"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-02-13T20:55:29Z",
"nvd_published_at": "2025-02-13T16:16:48Z",
"severity": "MODERATE"
},
"details": "A security issue was discovered in Kubernetes where a large number of container checkpoint requests made to the unauthenticated kubelet read-only HTTP endpoint may cause a Node Denial of Service by filling the Node\u0027s disk.",
"id": "GHSA-jgfp-53c3-624w",
"modified": "2025-12-20T03:12:03Z",
"published": "2025-02-13T18:32:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0426"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/issues/130016"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-jgfp-53c3-624w"
},
{
"type": "PACKAGE",
"url": "https://github.com/kubernetes/kubernetes"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/kubernetes-security-announce/c/KiODfu8i6w8"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/02/13/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Node Denial of Service via kubelet Checkpoint API"
}
GHSA-JGGW-P92X-6H2M
Vulnerability from github – Published: 2025-02-14 00:30 – Updated: 2025-02-14 18:30Mercedes Benz head-unit NTG 6 contains functions to import or export profile settings over USB. During parsing you can trigger that the service will be crashed.
{
"affected": [],
"aliases": [
"CVE-2023-34397"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-13T22:15:10Z",
"severity": "HIGH"
},
"details": "Mercedes Benz head-unit NTG 6 contains functions to import or export profile settings over USB. During parsing you can trigger that the service will be crashed.",
"id": "GHSA-jggw-p92x-6h2m",
"modified": "2025-02-14T18:30:50Z",
"published": "2025-02-14T00:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-34397"
},
{
"type": "WEB",
"url": "https://securelist.com/mercedes-benz-head-unit-security-research/115218"
}
],
"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-JGPV-4H4C-XHW3
Vulnerability from github – Published: 2021-04-23 16:54 – Updated: 2021-04-22 17:01Impact
Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for a BLP container, and thus an attempted memory allocation can be very large.
Patches
An issue was discovered in Pillow before 6.2.0. When reading specially crafted invalid image files, the library can either allocate very large amounts of memory or take an extremely long period of time to process the image.
Workarounds
An issue was discovered in Pillow before 6.2.0. When reading specially crafted invalid image files, the library can either allocate very large amounts of memory or take an extremely long period of time to process the image.
References
https://nvd.nist.gov/vuln/detail/CVE-2021-27921
For more information
If you have any questions or comments about this advisory: * Open an issue in example link to repo * Email us at example email address
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c 8.1.1"
},
"package": {
"ecosystem": "PyPI",
"name": "pillow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.1.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-22T17:01:01Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Impact\n_Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for a BLP container, and thus an attempted memory allocation can be very large._\n\n### Patches\n_An issue was discovered in Pillow before 6.2.0. When reading specially crafted invalid image files, the library can either allocate very large amounts of memory or take an extremely long period of time to process the image._\n\n### Workarounds\n_An issue was discovered in Pillow before 6.2.0. When reading specially crafted invalid image files, the library can either allocate very large amounts of memory or take an extremely long period of time to process the image._\n\n### References\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-27921\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [example link to repo](http://example.com)\n* Email us at [example email address](mailto:example@example.com)",
"id": "GHSA-jgpv-4h4c-xhw3",
"modified": "2021-04-22T17:01:01Z",
"published": "2021-04-23T16:54:36Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/calix2/pyVulApp/security/advisories/GHSA-jgpv-4h4c-xhw3"
}
],
"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"
}
],
"summary": "Uncontrolled Resource Consumption in pillow"
}
GHSA-JGRX-MGXX-JF9V
Vulnerability from github – Published: 2021-09-20 20:27 – Updated: 2022-08-10 23:37nodejs-tmpl is simple string formatting. tmpl is vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "tmpl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-3777"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2021-09-16T17:05:45Z",
"nvd_published_at": "2021-09-15T08:15:00Z",
"severity": "HIGH"
},
"details": "nodejs-tmpl is simple string formatting. tmpl is vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion.",
"id": "GHSA-jgrx-mgxx-jf9v",
"modified": "2022-08-10T23:37:11Z",
"published": "2021-09-20T20:27:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3777"
},
{
"type": "WEB",
"url": "https://github.com/daaku/nodejs-tmpl/commit/4c654e4d1542f329ed561fd95ccd80f30c6872d6"
},
{
"type": "PACKAGE",
"url": "https://github.com/daaku/nodejs-tmpl"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/a07b547a-f457-41c9-9d89-ee48bee8a4df"
}
],
"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": "tmpl vulnerable to Inefficient Regular Expression Complexity which may lead to resource exhaustion"
}
GHSA-JGW7-P4WJ-H882
Vulnerability from github – Published: 2023-12-07 09:30 – Updated: 2023-12-09 06:30A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.
{
"affected": [],
"aliases": [
"CVE-2023-48840"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-07T07:15:12Z",
"severity": "HIGH"
},
"details": "A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.",
"id": "GHSA-jgw7-p4wj-h882",
"modified": "2023-12-09T06:30:20Z",
"published": "2023-12-07T09:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48840"
},
{
"type": "WEB",
"url": "https://www.phpjabbers.com/appointment-scheduler"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/176056"
}
],
"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-JGWG-XV24-V8WG
Vulnerability from github – Published: 2022-10-12 12:00 – Updated: 2025-01-03 00:31Windows Event Logging Service Denial of Service Vulnerability.
{
"affected": [],
"aliases": [
"CVE-2022-37981"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-11T19:15:00Z",
"severity": "MODERATE"
},
"details": "Windows Event Logging Service Denial of Service Vulnerability.",
"id": "GHSA-jgwg-xv24-v8wg",
"modified": "2025-01-03T00:31:06Z",
"published": "2022-10-12T12:00:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-37981"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-37981"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-37981"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-JH3R-4MFV-PJV8
Vulnerability from github – Published: 2022-05-17 19:49 – Updated: 2022-05-17 19:49The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.
{
"affected": [],
"aliases": [
"CVE-2011-0762"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2011-03-02T20:00:00Z",
"severity": "MODERATE"
},
"details": "The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.",
"id": "GHSA-jh3r-4mfv-pjv8",
"modified": "2022-05-17T19:49:32Z",
"published": "2022-05-17T19:49:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-0762"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65873"
},
{
"type": "WEB",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622741"
},
{
"type": "WEB",
"url": "http://cxib.net/stuff/vspoc232.c"
},
{
"type": "WEB",
"url": "http://jvn.jp/en/jp/JVN37417423/index.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055881.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055882.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055957.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html"
},
{
"type": "WEB",
"url": "http://marc.info/?l=bugtraq\u0026m=133226187115472\u0026w=2"
},
{
"type": "WEB",
"url": "http://securityreason.com/achievement_securityalert/95"
},
{
"type": "WEB",
"url": "http://securityreason.com/securityalert/8109"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2011/dsa-2305"
},
{
"type": "WEB",
"url": "http://www.exploit-db.com/exploits/16270"
},
{
"type": "WEB",
"url": "http://www.kb.cert.org/vuls/id/590604"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:049"
},
{
"type": "WEB",
"url": "http://www.redhat.com/support/errata/RHSA-2011-0337.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/516748/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/46617"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1025186"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1098-1"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0547"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0639"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0668"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0713"
}
],
"schema_version": "1.4.0",
"severity": []
}
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.