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-VFVJ-3M3G-M532
Vulnerability from github – Published: 2023-03-13 20:53 – Updated: 2023-03-13 20:53Summary
Fuzz testing on crossplane/crossplane, by Ada Logics and sponsored by the CNCF, identified input to a function in the fieldpath package that can cause an out of memory panic. Applications that use the Paved type's SetValue method with user provided input without proper validation might use excessive amounts of memory and cause an out of memory panic.
Details
In the fieldpath package, the SetValue method of the Paved type sets a value on the inner object according to the provided path, without validating it first. This allows setting values in slices at any specific index and the code will grow the target array up to the required size. The index is currently capped at max uint32 (4294967295) given how indexes are parsed, but that is still an unnecessarily large value.
Workaround
Users can parse and validate the path before passing it to the SetValue method of the Paved type, constraining the index size as deemed appropriate.
Credits
Disclosed by Ada Logics in a fuzzing audit sponsored by CNCF.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/crossplane/crossplane-runtime"
},
"ranges": [
{
"events": [
{
"introduced": "0.17.0"
},
{
"fixed": "0.19.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/crossplane/crossplane-runtime"
},
"ranges": [
{
"events": [
{
"introduced": "0.6.0"
},
{
"fixed": "0.16.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-27483"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-13T20:53:50Z",
"nvd_published_at": "2023-03-09T21:15:00Z",
"severity": "MODERATE"
},
"details": "### Summary\n\nFuzz testing on `crossplane/crossplane`, by Ada Logics and sponsored by the CNCF, identified input to a function in the `fieldpath` package that can cause an out of memory panic. Applications that use the `Paved` type\u0027s `SetValue` method with user provided input without proper validation might use excessive amounts of memory and cause an out of memory panic.\n\n### Details\n\nIn the `fieldpath` package, the `SetValue` method of the `Paved` type sets a value on the inner object according to the provided path, without validating it first. This allows setting values in slices at any specific index and the code will grow the target array up to the required size. The index is currently capped at max uint32 (4294967295) given how indexes are parsed, but that is still an unnecessarily large value.\n\n### Workaround\n\nUsers can parse and validate the path before passing it to the `SetValue` method of the `Paved` type, constraining the index size as deemed appropriate.\n\n### Credits\n\nDisclosed by Ada Logics in a fuzzing audit sponsored by CNCF.",
"id": "GHSA-vfvj-3m3g-m532",
"modified": "2023-03-13T20:53:50Z",
"published": "2023-03-13T20:53:50Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/crossplane/crossplane-runtime/security/advisories/GHSA-vfvj-3m3g-m532"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27483"
},
{
"type": "WEB",
"url": "https://github.com/crossplane/crossplane-runtime/commit/53508a9f4374604db140dd8ab2fa52276441e738"
},
{
"type": "WEB",
"url": "https://github.com/crossplane/crossplane-runtime/commit/f67177024d906aaf5e13ee7cd470b4e87a9fef40"
},
{
"type": "PACKAGE",
"url": "https://github.com/crossplane/crossplane-runtime"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2023-1623"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "fieldpath\u0027s Paved.SetValue allows growing arrays up to arbitrary sizes in crossplane-runtime"
}
GHSA-VFVV-GFH6-H8QC
Vulnerability from github – Published: 2022-05-01 17:41 – Updated: 2022-05-01 17:41** DISPUTED ** The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal.
{
"affected": [],
"aliases": [
"CVE-2007-0086"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2007-01-05T18:28:00Z",
"severity": "HIGH"
},
"details": "** DISPUTED ** The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal.",
"id": "GHSA-vfvv-gfh6-h8qc",
"modified": "2022-05-01T17:41:38Z",
"published": "2022-05-01T17:41:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2007-0086"
},
{
"type": "WEB",
"url": "http://osvdb.org/33456"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/455833/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/455879/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/455882/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/455920/100/0/threaded"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VG2H-939C-4P88
Vulnerability from github – Published: 2022-05-24 19:15 – Updated: 2022-05-24 19:15The vCenter Server contains a denial-of-service vulnerability in VPXD service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to create a denial of service condition due to excessive memory consumption by VPXD service.
{
"affected": [],
"aliases": [
"CVE-2021-22010"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-23T12:15:00Z",
"severity": "HIGH"
},
"details": "The vCenter Server contains a denial-of-service vulnerability in VPXD service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to create a denial of service condition due to excessive memory consumption by VPXD service.",
"id": "GHSA-vg2h-939c-4p88",
"modified": "2022-05-24T19:15:36Z",
"published": "2022-05-24T19:15:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22010"
},
{
"type": "WEB",
"url": "https://www.vmware.com/security/advisories/VMSA-2021-0020.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VG3R-RM7W-2XGH
Vulnerability from github – Published: 2024-05-16 17:44 – Updated: 2025-11-03 22:46Impact
The REXML gem before 3.2.6 has a DoS vulnerability when it parses an XML that has many >s in an attribute value.
If you need to parse untrusted XMLs, you may be impacted to this vulnerability.
Patches
The REXML gem 3.2.7 or later include the patch to fix this vulnerability.
Workarounds
Don't parse untrusted XMLs.
References
- https://www.ruby-lang.org/en/news/2024/05/16/dos-rexml-cve-2024-35176/
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rexml"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-35176"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-05-16T17:44:04Z",
"nvd_published_at": "2024-05-16T16:15:09Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nThe REXML gem before 3.2.6 has a DoS vulnerability when it parses an XML that has many `\u003e`s in an attribute value.\n\nIf you need to parse untrusted XMLs, you may be impacted to this vulnerability.\n\n### Patches\n\nThe REXML gem 3.2.7 or later include the patch to fix this vulnerability.\n\n### Workarounds\n\nDon\u0027t parse untrusted XMLs.\n\n### References\n\n* https://www.ruby-lang.org/en/news/2024/05/16/dos-rexml-cve-2024-35176/",
"id": "GHSA-vg3r-rm7w-2xgh",
"modified": "2025-11-03T22:46:47Z",
"published": "2024-05-16T17:44:04Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ruby/rexml/security/advisories/GHSA-vg3r-rm7w-2xgh"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35176"
},
{
"type": "WEB",
"url": "https://github.com/ruby/rexml/commit/4325835f92f3f142ebd91a3fdba4e1f1ab7f1cfb"
},
{
"type": "PACKAGE",
"url": "https://github.com/ruby/rexml"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250306-0001"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2024/05/16/dos-rexml-cve-2024-35176"
}
],
"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": "REXML contains a denial of service vulnerability"
}
GHSA-VG6M-6QGH-29QP
Vulnerability from github – Published: 2022-09-07 00:01 – Updated: 2022-09-17 00:00Samourai Wallet Stonewallx2 0.99.98e allows a denial of service via a P2P coinjoin. The attacker and victim must follow each other's paynym. Then, the victim must try to collaborate with the attacker for a Stonewallx2 transaction. Next, the attacker broadcasts a tx, spending the inputs used in Stonewallx2 before the victim can broadcast the collaborative transaction. The attacker does not signal opt in RBF, and uses the lowest fee rate. This would result in the victim being unable to perform Stonewallx2. (Note that the attacker could use multiple paynyms.)
{
"affected": [],
"aliases": [
"CVE-2022-35913"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-06T23:15:00Z",
"severity": "MODERATE"
},
"details": "Samourai Wallet Stonewallx2 0.99.98e allows a denial of service via a P2P coinjoin. The attacker and victim must follow each other\u0027s paynym. Then, the victim must try to collaborate with the attacker for a Stonewallx2 transaction. Next, the attacker broadcasts a tx, spending the inputs used in Stonewallx2 before the victim can broadcast the collaborative transaction. The attacker does not signal opt in RBF, and uses the lowest fee rate. This would result in the victim being unable to perform Stonewallx2. (Note that the attacker could use multiple paynyms.)",
"id": "GHSA-vg6m-6qgh-29qp",
"modified": "2022-09-17T00:00:31Z",
"published": "2022-09-07T00:01:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35913"
},
{
"type": "WEB",
"url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-July/020737.html"
},
{
"type": "WEB",
"url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-June/020595.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-VGC7-R882-FRMH
Vulnerability from github – Published: 2025-02-19 21:31 – Updated: 2025-11-04 21:31A lack of rate limiting in the "Login Section, Forgot Email" feature of PHPJabbers Hotel Booking System v4.0 allows attackers to send an excessive amount of reset requests for a legitimate user, leading to a possible Denial of Service (DoS) via a large amount of generated e-mail messages.
{
"affected": [],
"aliases": [
"CVE-2023-51301"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-19T21:15:14Z",
"severity": "HIGH"
},
"details": "A lack of rate limiting in the \"Login Section, Forgot Email\" feature of PHPJabbers Hotel Booking System v4.0 allows attackers to send an excessive amount of reset requests for a legitimate user, leading to a possible Denial of Service (DoS) via a large amount of generated e-mail messages.",
"id": "GHSA-vgc7-r882-frmh",
"modified": "2025-11-04T21:31:30Z",
"published": "2025-02-19T21:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51301"
},
{
"type": "WEB",
"url": "https://packetstorm.news/files/id/176486"
},
{
"type": "WEB",
"url": "https://www.phpjabbers.com/hotel-booking-system/#sectionDemo"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/176486/PHPJabbers-Hotel-Booking-System-4.0-Missing-Rate-Limiting.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-VGQX-447M-WVCJ
Vulnerability from github – Published: 2025-10-28 00:31 – Updated: 2025-11-15 02:31Liferay Portal 7.4.0 through 7.4.3.99, and Liferay DXP 2023.Q3.1 through 2023.Q3.4, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupported versions does not limit the number of objects returned from Headless API requests, which allows remote attackers to perform denial-of-service (DoS) attacks on the application by executing a request that returns a large number of objects.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "com.liferay.portal:release.portal.bom"
},
"ranges": [
{
"events": [
{
"introduced": "7.4.0-ga1"
},
{
"fixed": "7.4.3.100"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-62260"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-10-29T10:44:49Z",
"nvd_published_at": "2025-10-27T22:15:41Z",
"severity": "HIGH"
},
"details": "Liferay Portal 7.4.0 through 7.4.3.99, and Liferay DXP 2023.Q3.1 through 2023.Q3.4, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupported versions does not limit the number of objects returned from Headless API requests, which allows remote attackers to perform denial-of-service (DoS) attacks on the application by executing a request that returns a large number of objects.",
"id": "GHSA-vgqx-447m-wvcj",
"modified": "2025-11-15T02:31:38Z",
"published": "2025-10-28T00:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62260"
},
{
"type": "WEB",
"url": "https://github.com/liferay/liferay-portal/commit/5f5c73913b0e7287f7de0b4e19987cc57844b691"
},
{
"type": "PACKAGE",
"url": "https://github.com/liferay/liferay-portal"
},
{
"type": "WEB",
"url": "https://liferay.atlassian.net/browse/LPE-17800"
},
{
"type": "WEB",
"url": "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62260"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Liferay Portal Vulnerable to DoS via Crafted Headless API Request"
}
GHSA-VGRM-6FX3-7FRJ
Vulnerability from github – Published: 2022-05-13 01:14 – Updated: 2022-05-13 01:14qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.
{
"affected": [],
"aliases": [
"CVE-2018-5748"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-01-25T16:29:00Z",
"severity": "HIGH"
},
"details": "qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.",
"id": "GHSA-vgrm-6fx3-7frj",
"modified": "2022-05-13T01:14:42Z",
"published": "2022-05-13T01:14:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5748"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1396"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1929"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/03/msg00018.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4137"
},
{
"type": "WEB",
"url": "https://www.redhat.com/archives/libvir-list/2018-January/msg00527.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/102825"
}
],
"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-VH4F-FGPP-X8X2
Vulnerability from github – Published: 2022-08-25 00:00 – Updated: 2022-09-01 22:23The package node-opcua before 2.74.0 are vulnerable to Denial of Service (DoS) when bypassing the limitations for excessive memory consumption by sending multiple CloseSession requests with the deleteSubscription parameter equal to False.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "node-opcua"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.74.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-24375"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-01T22:23:21Z",
"nvd_published_at": "2022-08-24T05:15:00Z",
"severity": "HIGH"
},
"details": "The package node-opcua before 2.74.0 are vulnerable to Denial of Service (DoS) when bypassing the limitations for excessive memory consumption by sending multiple `CloseSession` requests with the `deleteSubscription` parameter equal to `False`.",
"id": "GHSA-vh4f-fgpp-x8x2",
"modified": "2022-09-01T22:23:21Z",
"published": "2022-08-25T00:00:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24375"
},
{
"type": "WEB",
"url": "https://github.com/node-opcua/node-opcua/pull/1182"
},
{
"type": "WEB",
"url": "https://github.com/node-opcua/node-opcua/commit/3fd46ec156e7718a506be41f3916310b6bdd0407"
},
{
"type": "WEB",
"url": "https://github.com/node-opcua/node-opcua/commit/7b5044b3f5866fbedc3efabd05e407352c07bd2f"
},
{
"type": "PACKAGE",
"url": "https://github.com/node-opcua/node-opcua"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JS-NODEOPCUA-2988725"
}
],
"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": "node-opcua DoS when bypassing limitations for excessive memory consumption"
}
GHSA-VH54-WWR5-29Q5
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: DML). 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. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2025-50078"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-15T20:15:43Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). 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. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-vh54-wwr5-29q5",
"modified": "2025-07-15T21:31:41Z",
"published": "2025-07-15T21:31:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50078"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2025.html"
}
],
"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: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.