CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5645 vulnerabilities reference this CWE, most recent first.
GHSA-GCX5-699X-F949
Vulnerability from github – Published: 2022-05-24 17:00 – Updated: 2024-04-04 02:38neblio through 1.5.1 (a chain-based proof-of-stake cryptocurrency) allows a remote denial of service, exploitable by an attacker who acquires even a small amount of stake/coins in the system. The attacker sends invalid headers/blocks, which are stored on the victim's disk.
{
"affected": [],
"aliases": [
"CVE-2018-19165"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-11-05T21:15:00Z",
"severity": "HIGH"
},
"details": "neblio through 1.5.1 (a chain-based proof-of-stake cryptocurrency) allows a remote denial of service, exploitable by an attacker who acquires even a small amount of stake/coins in the system. The attacker sends invalid headers/blocks, which are stored on the victim\u0027s disk.",
"id": "GHSA-gcx5-699x-f949",
"modified": "2024-04-04T02:38:17Z",
"published": "2022-05-24T17:00:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19165"
},
{
"type": "WEB",
"url": "https://medium.com/%40dsl_uiuc/fake-stake-attacks-on-chain-based-proof-of-stake-cryptocurrencies-b8b05723f806"
},
{
"type": "WEB",
"url": "https://medium.com/@dsl_uiuc/fake-stake-attacks-on-chain-based-proof-of-stake-cryptocurrencies-b8b05723f806"
},
{
"type": "WEB",
"url": "http://fc19.ifca.ai/preproceedings/180-preproceedings.pdf"
}
],
"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-GF8C-J759-86MG
Vulnerability from github – Published: 2022-08-25 00:00 – Updated: 2022-09-01 22:22A flaw was found in AMQ Broker. This issue can cause a partial interruption to the availability of AMQ Broker via an Out of memory (OOM) condition. This flaw allows an attacker to partially disrupt availability to the broker through a sustained attack of maliciously crafted messages. The highest threat from this vulnerability is system availability.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.activemq:artemis-core-client"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.19.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-4040"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-01T22:22:33Z",
"nvd_published_at": "2022-08-24T16:15:00Z",
"severity": "MODERATE"
},
"details": "A flaw was found in AMQ Broker. This issue can cause a partial interruption to the availability of AMQ Broker via an Out of memory (OOM) condition. This flaw allows an attacker to partially disrupt availability to the broker through a sustained attack of maliciously crafted messages. The highest threat from this vulnerability is system availability.",
"id": "GHSA-gf8c-j759-86mg",
"modified": "2022-09-01T22:22:33Z",
"published": "2022-08-25T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4040"
},
{
"type": "WEB",
"url": "https://github.com/apache/activemq-artemis/pull/3862"
},
{
"type": "WEB",
"url": "https://github.com/apache/activemq-artemis/pull/3871"
},
{
"type": "WEB",
"url": "https://github.com/apache/activemq-artemis/pull/3871/commits"
},
{
"type": "WEB",
"url": "https://github.com/apache/activemq-artemis/pull/3871/commits/153d2e9a979aead8dff95fbc91d659ecc7d0fb82"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2021-4040"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2028254"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/activemq-artemis"
},
{
"type": "WEB",
"url": "https://issues.apache.org/jira/browse/ARTEMIS-3593"
}
],
"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"
}
],
"summary": "org.apache.activemq:artemis-core-client Vulnerable to Out-of-Bounds Write"
}
GHSA-GFFV-3CV9-Q7FG
Vulnerability from github – Published: 2022-05-06 00:00 – Updated: 2022-05-14 00:01On F5 BIG-IP APM 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, when APM is configured on a virtual server and the associated access profile is configured with APM AAA NTLM Auth, undisclosed requests can cause an increase in internal resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
{
"affected": [],
"aliases": [
"CVE-2022-27181"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-05T17:15:00Z",
"severity": "MODERATE"
},
"details": "On F5 BIG-IP APM 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, when APM is configured on a virtual server and the associated access profile is configured with APM AAA NTLM Auth, undisclosed requests can cause an increase in internal resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated",
"id": "GHSA-gffv-3cv9-q7fg",
"modified": "2022-05-14T00:01:37Z",
"published": "2022-05-06T00:00:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27181"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K93543114"
}
],
"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-GFJQ-FHHF-PP45
Vulnerability from github – Published: 2024-01-22 21:31 – Updated: 2024-09-06 00:31IObit Malware Fighter v11.0.0.1274 is vulnerable to a Denial of Service vulnerability by triggering the 0x8001E00C IOCTL code of the ImfHpRegFilter.sys driver.
{
"affected": [],
"aliases": [
"CVE-2024-0430"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-22T19:15:09Z",
"severity": "MODERATE"
},
"details": "IObit Malware Fighter v11.0.0.1274 is vulnerable to a Denial of Service vulnerability by triggering the 0x8001E00C IOCTL code of the ImfHpRegFilter.sys driver.",
"id": "GHSA-gfjq-fhhf-pp45",
"modified": "2024-09-06T00:31:19Z",
"published": "2024-01-22T21:31:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0430"
},
{
"type": "WEB",
"url": "https://fluidattacks.com/advisories/davis"
},
{
"type": "WEB",
"url": "https://www.iobit.com/en/malware-fighter.php"
}
],
"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:H",
"type": "CVSS_V3"
}
]
}
GHSA-GFV6-CJ92-G3HX
Vulnerability from github – Published: 2018-12-21 17:46 – Updated: 2024-10-23 15:56OpenKMIP PyKMIP version All versions before 0.8.0 contains a CWE 399: Resource Management Errors (similar issue to CVE-2015-5262) vulnerability in PyKMIP server that can result in DOS: the server can be made unavailable by one or more clients opening all of the available sockets. This attack appear to be exploitable via A client or clients open sockets with the server and then never close them. This vulnerability appears to have been fixed in 0.8.0.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pykmip"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.8.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-1000872"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:37:11Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "OpenKMIP PyKMIP version All versions before 0.8.0 contains a CWE 399: Resource Management Errors (similar issue to CVE-2015-5262) vulnerability in PyKMIP server that can result in DOS: the server can be made unavailable by one or more clients opening all of the available sockets. This attack appear to be exploitable via A client or clients open sockets with the server and then never close them. This vulnerability appears to have been fixed in 0.8.0.",
"id": "GHSA-gfv6-cj92-g3hx",
"modified": "2024-10-23T15:56:53Z",
"published": "2018-12-21T17:46:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000872"
},
{
"type": "WEB",
"url": "https://github.com/OpenKMIP/PyKMIP/issues/430"
},
{
"type": "WEB",
"url": "https://github.com/OpenKMIP/PyKMIP/commit/3a7b880bdf70d295ed8af3a5880bab65fa6b3932"
},
{
"type": "PACKAGE",
"url": "https://github.com/OpenKMIP/PyKMIP"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-gfv6-cj92-g3hx"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pykmip/PYSEC-2018-22.yaml"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "PyKMIP Denial of service vulnerability"
}
GHSA-GFVJ-J222-M85V
Vulnerability from github – Published: 2026-05-20 21:31 – Updated: 2026-06-02 18:31The CSP report endpoint intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource exhaustion or log flooding.
{
"affected": [],
"aliases": [
"CVE-2026-9137"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-20T20:16:46Z",
"severity": "MODERATE"
},
"details": "The CSP report endpoint intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource exhaustion or log flooding.",
"id": "GHSA-gfvj-j222-m85v",
"modified": "2026-06-02T18:31:25Z",
"published": "2026-05-20T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9137"
},
{
"type": "WEB",
"url": "https://github.com/MISP/MISP/commit/02932cccab230b295afcaf5aa05e363d30db0ec9"
}
],
"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:A/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-GFX4-R3V9-VPH4
Vulnerability from github – Published: 2022-05-13 01:24 – Updated: 2022-05-13 01:24The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.
{
"affected": [],
"aliases": [
"CVE-2011-2689"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2011-07-28T22:55:00Z",
"severity": "MODERATE"
},
"details": "The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.",
"id": "GHSA-gfx4-r3v9-vph4",
"modified": "2022-05-13T01:24:48Z",
"published": "2022-05-13T01:24:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-2689"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=720861"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/68557"
},
{
"type": "WEB",
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6905d9e4dda6112f007e9090bca80507da158e63"
},
{
"type": "WEB",
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6905d9e4dda6112f007e9090bca80507da158e63"
},
{
"type": "WEB",
"url": "http://marc.info/?l=bugtraq\u0026m=139447903326211\u0026w=2"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2011-1065.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/45193"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1025776"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2011/07/13/1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/48677"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GG6M-FHQV-HG56
Vulnerability from github – Published: 2020-09-01 15:15 – Updated: 2021-09-23 21:04Versions of yar prior to 2.2.0 are affected by a denial of service vulnerability related to an invalid encrypted session cookie value.
When an invalid encryped session cookie value is provided, the process will crash.
Recommendation
Update to version 2.2.0 or later.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "yar"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2014-4179"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:09:03Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "Versions of `yar` prior to 2.2.0 are affected by a denial of service vulnerability related to an invalid encrypted session cookie value.\n\nWhen an invalid encryped session cookie value is provided, the process will crash.\n\n\n## Recommendation\n\nUpdate to version 2.2.0 or later.",
"id": "GHSA-gg6m-fhqv-hg56",
"modified": "2021-09-23T21:04:51Z",
"published": "2020-09-01T15:15:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-4179"
},
{
"type": "WEB",
"url": "https://github.com/spumko/yar/issues/34"
},
{
"type": "WEB",
"url": "https://github.com/spumko/yar"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/44"
}
],
"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": "Denial of Service in yar"
}
GHSA-GGG9-6Q5P-37J3
Vulnerability from github – Published: 2024-07-11 18:31 – Updated: 2024-07-11 21:31An Uncontrolled Resource Consumption vulnerability in the H.323 ALG (Application Layer Gateway) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 and MS-MPC/MIC, allows an unauthenticated network-based attacker to send specific packets causing traffic loss leading to Denial of Service (DoS).
Continued receipt and processing of these specific packets will sustain the Denial of Service condition.
The memory usage can be monitored using the below command.
??user@host> show usp memory segment sha data objcache jsf This issue affects SRX Series and MX Series with SPC3 and MS-MPC/MIC:
- ?20.4 before 20.4R3-S10,
- ?21.2 before 21.2R3-S6,
- ?21.3 before 21.3R3-S5,
- ?21.4 before 21.4R3-S6,
- ?22.1 before 22.1R3-S4,
- ?22.2 before 22.2R3-S2,
- ?22.3 before 22.3R3-S1,
- ?22.4 before 22.4R3,
- ?23.2 before 23.2R2.
{
"affected": [],
"aliases": [
"CVE-2024-39551"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-11T17:15:16Z",
"severity": "HIGH"
},
"details": "An Uncontrolled Resource Consumption vulnerability in the H.323 ALG (Application Layer Gateway) of\u00a0 Juniper Networks Junos OS on SRX Series and MX Series with SPC3 and MS-MPC/MIC, allows an\u00a0unauthenticated network-based attacker to send specific packets causing traffic loss leading to Denial of Service (DoS).\u00a0\n\nContinued receipt and processing of these specific packets will sustain the Denial of Service condition.\n\nThe memory usage can be monitored using the below command.\n\n??user@host\u003e show usp memory segment sha data objcache jsf\u00a0\nThis issue affects SRX Series and MX Series with SPC3 and MS-MPC/MIC:\u00a0\n\n * ?20.4 before 20.4R3-S10,\u00a0\n * ?21.2 before 21.2R3-S6,\u00a0\n * ?21.3 before 21.3R3-S5,\u00a0\n * ?21.4 before 21.4R3-S6,\u00a0\n * ?22.1 before 22.1R3-S4,\u00a0\n * ?22.2 before 22.2R3-S2,\u00a0\n * ?22.3 before 22.3R3-S1,\u00a0\n * ?22.4 before 22.4R3,\u00a0\n * ?23.2 before 23.2R2.",
"id": "GHSA-ggg9-6q5p-37j3",
"modified": "2024-07-11T21:31:12Z",
"published": "2024-07-11T18:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39551"
},
{
"type": "WEB",
"url": "https://supportportal.juniper.net/JSA83013"
}
],
"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:L/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-GGP9-5CP6-GWQR
Vulnerability from github – Published: 2022-10-18 19:00 – Updated: 2022-10-20 19:00supybot-fedora implements the command 'refresh', that refreshes the cache of all users from FAS. This takes quite a while to run, and zodbot stops responding to requests during this time.
{
"affected": [],
"aliases": [
"CVE-2020-15853"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-18T14:15:00Z",
"severity": "MODERATE"
},
"details": "supybot-fedora implements the command \u0027refresh\u0027, that refreshes the cache of all users from FAS. This takes quite a while to run, and zodbot stops responding to requests during this time.",
"id": "GHSA-ggp9-5cp6-gwqr",
"modified": "2022-10-20T19:00:29Z",
"published": "2022-10-18T19:00:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15853"
},
{
"type": "WEB",
"url": "https://github.com/fedora-infra/supybot-fedora/issues/69"
}
],
"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"
}
]
}
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.