CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5568 vulnerabilities reference this CWE, most recent first.
GHSA-9J5Q-479X-43G2
Vulnerability from github – Published: 2025-02-06 06:31 – Updated: 2025-08-05 14:27A prototype pollution in the function deepMerge of @stryker-mutator/util v8.6.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@stryker-mutator/util"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.7.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-57085"
],
"database_specific": {
"cwe_ids": [
"CWE-1321",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-08-05T14:27:29Z",
"nvd_published_at": "2025-02-05T22:15:32Z",
"severity": "HIGH"
},
"details": "A prototype pollution in the function deepMerge of @stryker-mutator/util v8.6.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.",
"id": "GHSA-9j5q-479x-43g2",
"modified": "2025-08-05T14:27:29Z",
"published": "2025-02-06T06:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57085"
},
{
"type": "WEB",
"url": "https://github.com/stryker-mutator/stryker-js/issues/5144"
},
{
"type": "WEB",
"url": "https://github.com/stryker-mutator/stryker-js/commit/f7b34bfbbde33e45bc213a2f6058bf0c5bf6bce7"
},
{
"type": "WEB",
"url": "https://gist.github.com/tariqhawis/f59355f62dad6f8b53b42317f143ba0c"
},
{
"type": "PACKAGE",
"url": "https://github.com/stryker-mutator/stryker-js"
},
{
"type": "WEB",
"url": "https://github.com/stryker-mutator/stryker-js/blob/7270f111ff36d6b18669302f5702fd42f664d53e/CHANGELOG.md#871-2024-12-11"
}
],
"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": "@stryker-mutator/util vulnerable to Prototype Pollution"
}
GHSA-9J6F-82H4-9MW2
Vulnerability from github – Published: 2022-05-14 00:55 – Updated: 2022-05-14 00:55In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption).
{
"affected": [],
"aliases": [
"CVE-2018-8777"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-03T22:29:00Z",
"severity": "HIGH"
},
"details": "In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption).",
"id": "GHSA-9j6f-82h4-9mw2",
"modified": "2022-05-14T00:55:59Z",
"published": "2022-05-14T00:55:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8777"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2018/03/28/large-request-dos-in-webrick-cve-2018-8777"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4259"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3685-1"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0663"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0591"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0542"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:2028"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3731"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3730"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3729"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103683"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1042004"
}
],
"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-9J7M-RJQX-48VH
Vulnerability from github – Published: 2022-05-14 01:08 – Updated: 2023-03-08 19:16Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rubygems-update"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.23.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "rubygems-update"
},
"ranges": [
{
"events": [
{
"introduced": "1.8.24"
},
{
"fixed": "1.8.26"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "rubygems-update"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.0.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "rubygems-update"
},
"ranges": [
{
"events": [
{
"introduced": "2.1.0.rc.1"
},
{
"fixed": "2.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2013-4287"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-08T19:16:03Z",
"nvd_published_at": "2013-10-17T23:55:00Z",
"severity": "MODERATE"
},
"details": "Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in `lib/rubygems/version.rb` in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.",
"id": "GHSA-9j7m-rjqx-48vh",
"modified": "2023-03-08T19:16:03Z",
"published": "2022-05-14T01:08:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-4287"
},
{
"type": "WEB",
"url": "https://github.com/rubygems/rubygems/commit/938a7e31ac73655845ab9045629ff3f580a125da"
},
{
"type": "WEB",
"url": "https://github.com/rubygems/rubygems/commit/b697536f2455e8c8853cf5cf8a1017a36031ed67"
},
{
"type": "WEB",
"url": "https://github.com/rubygems/rubygems/commit/b9baec03145aed684d1cd3c87dcac3cc06becd9b"
},
{
"type": "WEB",
"url": "https://github.com/rubygems/rubygems/commit/ed733bc379d75620f5be4213f89d1d7b38be3191"
},
{
"type": "WEB",
"url": "https://github.com/rubygems/rubygems/blob/03a074e8838683f45611b119fd8f363aa44fe2fd/CHANGELOG.md"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2013-4287.yml"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20160806152839/https://puppet.com/security/cve/cve-2013-4287"
},
{
"type": "WEB",
"url": "http://blog.rubygems.org/2013/09/09/CVE-2013-4287.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-1427.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-1441.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-1523.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-1852.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2014-0207.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2013/09/10/1"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "RubyGems Regular Expression Denial of Service vulnerability"
}
GHSA-9J88-8W42-XMXG
Vulnerability from github – Published: 2023-04-11 03:31 – Updated: 2023-04-14 21:30SAP NetWeaver AS for ABAP and ABAP Platform - versions 740, 750, 751, 752, 753, 754, 755, 756, 757, 791, allows an attacker authenticated as a non-administrative user to craft a request with certain parameters which can consume the server's resources sufficiently to make it unavailable over the network without any user interaction.
{
"affected": [],
"aliases": [
"CVE-2023-28763"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-11T03:15:00Z",
"severity": "MODERATE"
},
"details": "SAP NetWeaver AS for ABAP and ABAP Platform - versions 740, 750, 751, 752, 753, 754, 755, 756, 757, 791, allows an attacker authenticated as a non-administrative user to craft a request with certain parameters which can consume the server\u0027s resources sufficiently to make it unavailable over the network without any user interaction.\n\n",
"id": "GHSA-9j88-8w42-xmxg",
"modified": "2023-04-14T21:30:24Z",
"published": "2023-04-11T03:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28763"
},
{
"type": "WEB",
"url": "https://launchpad.support.sap.com/#/notes/3296378"
},
{
"type": "WEB",
"url": "https://www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.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"
}
]
}
GHSA-9J95-8XV9-JV6R
Vulnerability from github – Published: 2024-12-12 03:33 – Updated: 2024-12-12 03:33Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-49096"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-12T02:04:35Z",
"severity": "HIGH"
},
"details": "Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability",
"id": "GHSA-9j95-8xv9-jv6r",
"modified": "2024-12-12T03:33:05Z",
"published": "2024-12-12T03:33:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49096"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49096"
}
],
"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-9JCX-PR2F-QVQ5
Vulnerability from github – Published: 2021-05-18 18:34 – Updated: 2024-05-20 19:40An issue was discovered in setTA in scan_rr.go in the Miek Gieben DNS library before 1.0.10 for Go. A dns.ParseZone() parsing error causes a segmentation violation, leading to denial of service.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/miekg/dns"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-17419"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-11T00:44:23Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "An issue was discovered in `setTA` in `scan_rr.go` in the Miek Gieben DNS library before 1.0.10 for Go. A `dns.ParseZone()` parsing error causes a segmentation violation, leading to denial of service.",
"id": "GHSA-9jcx-pr2f-qvq5",
"modified": "2024-05-20T19:40:31Z",
"published": "2021-05-18T18:34:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17419"
},
{
"type": "WEB",
"url": "https://github.com/miekg/dns/issues/742"
},
{
"type": "WEB",
"url": "https://github.com/miekg/dns/pull/745/commits/f71d7d9d77d439b30a5e50900df5b1f988a50e5e"
},
{
"type": "WEB",
"url": "https://github.com/miekg/dns/commit/501e858f679edecd4a38a86317ce50271014a80d"
},
{
"type": "PACKAGE",
"url": "https://github.com/miekg/dns"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2020-0028"
}
],
"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": "miekg/dns parsing error leads to nil pointer dereference and DoS"
}
GHSA-9JF5-H94C-4H3G
Vulnerability from github – Published: 2022-05-14 03:38 – Updated: 2022-05-14 03:38The Supervisor in Sandstorm doesn't set and enforce the resource limits of a process. This allows remote attackers to cause a denial of service by launching a fork bomb in the sandbox, or by using a large amount of disk space.
{
"affected": [],
"aliases": [
"CVE-2017-6198"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-06T16:29:00Z",
"severity": "MODERATE"
},
"details": "The Supervisor in Sandstorm doesn\u0027t set and enforce the resource limits of a process. This allows remote attackers to cause a denial of service by launching a fork bomb in the sandbox, or by using a large amount of disk space.",
"id": "GHSA-9jf5-h94c-4h3g",
"modified": "2022-05-14T03:38:26Z",
"published": "2022-05-14T03:38:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6198"
},
{
"type": "WEB",
"url": "https://devco.re/blog/2018/01/26/Sandstorm-Security-Review-CVE-2017-6200-en"
},
{
"type": "WEB",
"url": "https://github.com/sandstorm-io/sandstorm/blob/v0.202/src/sandstorm/supervisor.c++#L824"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9JVC-93XJ-9MFG
Vulnerability from github – Published: 2021-12-14 00:00 – Updated: 2021-12-16 00:02An uncontrolled resource consumption vulnerability in GitLab Runner affecting all versions starting from 13.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker triggering a job with a specially crafted docker image to exhaust resources on runner manager
{
"affected": [],
"aliases": [
"CVE-2021-39939"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-13T16:15:00Z",
"severity": "MODERATE"
},
"details": "An uncontrolled resource consumption vulnerability in GitLab Runner affecting all versions starting from 13.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker triggering a job with a specially crafted docker image to exhaust resources on runner manager",
"id": "GHSA-9jvc-93xj-9mfg",
"modified": "2021-12-16T00:02:46Z",
"published": "2021-12-14T00:00:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39939"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39939.json"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28630"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-9JX5-6PGF-CRRP
Vulnerability from github – Published: 2023-07-05 18:30 – Updated: 2024-05-14 20:15Withdrawn Advisory
This advisory has been withdrawn because it has been found to not be an issue. Please see the issue here for more information.
Original Description
A refcounting issue which leads to potential memory leak was discovered in scipy commit 8627df31ab in Py_FindObjects() function.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "scipy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-25399"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-06T21:01:56Z",
"nvd_published_at": "2023-07-05T17:15:09Z",
"severity": "MODERATE"
},
"details": "## Withdrawn Advisory\n\nThis advisory has been withdrawn because it has been found to not be an issue. Please see the issue [here](https://github.com/scipy/scipy/issues/16235#issuecomment-1625361328) for more information.\n\n## Original Description\n\nA refcounting issue which leads to potential memory leak was discovered in scipy commit 8627df31ab in `Py_FindObjects()` function.",
"id": "GHSA-9jx5-6pgf-crrp",
"modified": "2024-05-14T20:15:44Z",
"published": "2023-07-05T18:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25399"
},
{
"type": "WEB",
"url": "https://github.com/scipy/scipy/issues/16235"
},
{
"type": "WEB",
"url": "https://github.com/scipy/scipy/issues/16235#issuecomment-1625361328"
},
{
"type": "WEB",
"url": "https://github.com/scipy/scipy/pull/16397"
},
{
"type": "WEB",
"url": "https://github.com/scipy/scipy/commit/9b6521198c4f31d3f9cb525e581bea8e3e77f0a2"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/scipy/PYSEC-2023-102.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/scipy/scipy"
},
{
"type": "WEB",
"url": "http://www.square16.org/achievement/cve-2023-25399"
}
],
"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"
}
],
"summary": "Withdrawn: scipy memory leak vulnerability",
"withdrawn": "2024-05-14T20:15:44Z"
}
GHSA-9JXW-6CWC-FV29
Vulnerability from github – Published: 2024-09-17 00:31 – Updated: 2025-11-04 18:31A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.7, macOS Sequoia 15. Processing a maliciously crafted file may lead to unexpected app termination.
{
"affected": [],
"aliases": [
"CVE-2024-44154"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-17T00:15:50Z",
"severity": "MODERATE"
},
"details": "A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.7, macOS Sequoia 15. Processing a maliciously crafted file may lead to unexpected app termination.",
"id": "GHSA-9jxw-6cwc-fv29",
"modified": "2025-11-04T18:31:22Z",
"published": "2024-09-17T00:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44154"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/121238"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/121247"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/33"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/40"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.