CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5433 vulnerabilities reference this CWE, most recent first.
GHSA-PCWH-XXQR-QW2J
Vulnerability from github – Published: 2022-05-13 01:38 – Updated: 2025-10-22 00:31A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.
{
"affected": [],
"aliases": [
"CVE-2017-12237"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-09-29T01:34:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.",
"id": "GHSA-pcwh-xxqr-qw2j",
"modified": "2025-10-22T00:31:27Z",
"published": "2022-05-13T01:38:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12237"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ike"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12237"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/101037"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039460"
}
],
"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"
}
]
}
GHSA-PCWM-7778-9VQH
Vulnerability from github – Published: 2026-04-20 21:31 – Updated: 2026-04-20 21:31A vulnerability in the SQL Box in the admin interface of OTRS leads to an uncontrolled resource consumption leading to a DoS against the webserver. will be killed by the systemThis issue affects OTRS:
- 7.0.X
- 8.0.X
- 2023.X
- 2024.X
- 2025.X
- 2026.X before 2026.3.X
{
"affected": [],
"aliases": [
"CVE-2026-6060"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-20T19:16:11Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the SQL Box in the admin interface of OTRS leads to an uncontrolled resource consumption leading to a DoS against the webserver. will be killed by the systemThis issue affects OTRS:\u00a0\n\n * 7.0.X\n * 8.0.X\n * 2023.X\n * 2024.X\n * 2025.X\n * 2026.X before 2026.3.X",
"id": "GHSA-pcwm-7778-9vqh",
"modified": "2026-04-20T21:31:44Z",
"published": "2026-04-20T21:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6060"
},
{
"type": "WEB",
"url": "https://otrs.com/release-notes/otrs-security-advisory-2026-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF4H-8WHX-RXMF
Vulnerability from github – Published: 2022-05-14 01:11 – Updated: 2022-05-14 01:11Rockwell Automation PowerFlex 525 AC Drives 5.001 and earlier allow remote attackers to cause a denial of service by crashing the Common Industrial Protocol (CIP) network stack. The vulnerability allows the attacker to crash the CIP in a way that it does not accept new connections, but keeps the current connections active, which can prevent legitimate users from recovering control.
{
"affected": [],
"aliases": [
"CVE-2018-19282"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-04T21:29:00Z",
"severity": "CRITICAL"
},
"details": "Rockwell Automation PowerFlex 525 AC Drives 5.001 and earlier allow remote attackers to cause a denial of service by crashing the Common Industrial Protocol (CIP) network stack. The vulnerability allows the attacker to crash the CIP in a way that it does not accept new connections, but keeps the current connections active, which can prevent legitimate users from recovering control.",
"id": "GHSA-pf4h-8whx-rxmf",
"modified": "2022-05-14T01:11:26Z",
"published": "2022-05-14T01:11:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19282"
},
{
"type": "WEB",
"url": "https://applied-risk.com/application/files/4215/5385/2294/Advisory_AR2019004_Rockwell_Powerflex_525_Denial_of_Service.pdf"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-19-087-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF4X-FWWQ-H7VV
Vulnerability from github – Published: 2022-01-04 00:00 – Updated: 2022-07-02 00:00The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of long integer, causing a Denial of Service in the comments section, or pending comment dashboard depending if the user sent it as unauthenticated or authenticated.
{
"affected": [],
"aliases": [
"CVE-2021-24893"
],
"database_specific": {
"cwe_ids": [
"CWE-191",
"CWE-20",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-03T13:15:00Z",
"severity": "HIGH"
},
"details": "The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of long integer, causing a Denial of Service in the comments section, or pending comment dashboard depending if the user sent it as unauthenticated or authenticated.",
"id": "GHSA-pf4x-fwwq-h7vv",
"modified": "2022-07-02T00:00:30Z",
"published": "2022-01-04T00:00:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-24893"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/05d3af69-20b4-499a-8322-2b53674d6a58"
}
],
"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-PFF4-9QXC-79MQ
Vulnerability from github – Published: 2025-06-23 00:30 – Updated: 2025-06-23 00:30A vulnerability was found in CodeMirror up to 5.17.0 and classified as problematic. Affected by this issue is some unknown functionality of the file mode/markdown/markdown.js of the component Markdown Mode. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that "CodeMirror 6 exists, and is [...] much more actively maintained."
{
"affected": [],
"aliases": [
"CVE-2025-6493"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-22T22:15:22Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in CodeMirror up to 5.17.0 and classified as problematic. Affected by this issue is some unknown functionality of the file mode/markdown/markdown.js of the component Markdown Mode. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that \"CodeMirror 6 exists, and is [...] much more actively maintained.\"",
"id": "GHSA-pff4-9qxc-79mq",
"modified": "2025-06-23T00:30:19Z",
"published": "2025-06-23T00:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6493"
},
{
"type": "WEB",
"url": "https://github.com/codemirror/codemirror5/issues/7128"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.313610"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.313610"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.598875"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-PFMV-2R4F-J9MJ
Vulnerability from github – Published: 2022-02-10 00:01 – Updated: 2025-05-05 18:30In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
{
"affected": [],
"aliases": [
"CVE-2021-45960"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-682"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-01T19:15:00Z",
"severity": "HIGH"
},
"details": "In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).",
"id": "GHSA-pfmv-2r4f-j9mj",
"modified": "2025-05-05T18:30:48Z",
"published": "2022-02-10T00:01:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45960"
},
{
"type": "WEB",
"url": "https://github.com/libexpat/libexpat/issues/531"
},
{
"type": "WEB",
"url": "https://github.com/libexpat/libexpat/pull/534"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1217609"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202209-24"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220121-0004"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5073"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2022-05"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2022/01/17/3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PFQ8-RQ6V-VF5M
Vulnerability from github – Published: 2022-10-31 19:00 – Updated: 2025-06-11 17:34A Regular Expression Denial of Service (ReDoS) flaw was found in kangax html-minifier 4.0.0 because of the reCustomIgnore regular expression.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "html-minifier"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "4.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-37620"
],
"database_specific": {
"cwe_ids": [
"CWE-1333",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-22T23:06:37Z",
"nvd_published_at": "2022-10-31T12:15:00Z",
"severity": "HIGH"
},
"details": "A Regular Expression Denial of Service (ReDoS) flaw was found in kangax html-minifier 4.0.0 because of the reCustomIgnore regular expression.",
"id": "GHSA-pfq8-rq6v-vf5m",
"modified": "2025-06-11T17:34:37Z",
"published": "2022-10-31T19:00:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-37620"
},
{
"type": "WEB",
"url": "https://github.com/kangax/html-minifier/issues/1135"
},
{
"type": "PACKAGE",
"url": "https://github.com/kangax/html-minifier"
},
{
"type": "WEB",
"url": "https://github.com/kangax/html-minifier/blob/51ce10f4daedb1de483ffbcccecc41be1c873da2/src/htmlminifier.js#L1338"
},
{
"type": "WEB",
"url": "https://github.com/kangax/html-minifier/blob/51ce10f4daedb1de483ffbcccecc41be1c873da2/src/htmlminifier.js#L294"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JS-HTMLMINIFIER-3091181"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "kangax html-minifier REDoS vulnerability"
}
GHSA-PFV3-XH9Q-F4RQ
Vulnerability from github – Published: 2025-08-21 18:31 – Updated: 2025-08-21 18:31A vulnerability has been found in yarnpkg Yarn up to 1.22.22. This impacts the function setOptions of the file src/util/request-manager.js. Such manipulation leads to inefficient regular expression complexity. Local access is required to approach this attack. This vulnerability only affects products that are no longer supported by the maintainer.
{
"affected": [],
"aliases": [
"CVE-2025-9308"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-21T16:15:35Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in yarnpkg Yarn up to 1.22.22. This impacts the function setOptions of the file src/util/request-manager.js. Such manipulation leads to inefficient regular expression complexity. Local access is required to approach this attack. This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-pfv3-xh9q-f4rq",
"modified": "2025-08-21T18:31:28Z",
"published": "2025-08-21T18:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9308"
},
{
"type": "WEB",
"url": "https://github.com/yarnpkg/yarn/pull/9203"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.320913"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.320913"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.633486"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-PG6F-XVPP-GGGV
Vulnerability from github – Published: 2024-01-10 00:30 – Updated: 2024-01-10 00:30A vulnerability was found in SourceCodester Engineers Online Portal 1.0. It has been classified as problematic. Affected is an unknown function of the component File Upload Handler. The manipulation leads to resource consumption. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250116.
{
"affected": [],
"aliases": [
"CVE-2024-0348"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-09T22:15:44Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in SourceCodester Engineers Online Portal 1.0. It has been classified as problematic. Affected is an unknown function of the component File Upload Handler. The manipulation leads to resource consumption. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250116.",
"id": "GHSA-pg6f-xvpp-gggv",
"modified": "2024-01-10T00:30:21Z",
"published": "2024-01-10T00:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0348"
},
{
"type": "WEB",
"url": "https://mega.nz/file/HNkn2QbI#EjefwKgFoAjtWcxrQFMgBfhVQ1LAf2hq7Jg-nDsE-P4"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.250116"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.250116"
}
],
"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-PG84-6G27-3R3M
Vulnerability from github – Published: 2024-01-17 00:30 – Updated: 2025-06-03 21:30Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.35 and prior and 8.2.0 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-2024-20971"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-16T22:15:44Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.35 and prior and 8.2.0 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-pg84-6g27-3r3m",
"modified": "2025-06-03T21:30:33Z",
"published": "2024-01-17T00:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20971"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240201-0003"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujan2024.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"
}
]
}
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.