Common Weakness Enumeration

CWE-400

Discouraged

Uncontrolled 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-9J95-8XV9-JV6R

Vulnerability from github – Published: 2024-12-12 03:33 – Updated: 2024-12-12 03:33
VLAI
Details

Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

Show details on source website

{
  "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 19:40
VLAI
Summary
miekg/dns parsing error leads to nil pointer dereference and DoS
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.

Show details on source website

{
  "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 03:38
VLAI
Details

The 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.

Show details on source website

{
  "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 00:02
VLAI
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

Show details on source website

{
  "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 20:15
VLAI
Summary
Withdrawn: scipy memory leak vulnerability
Details

Withdrawn 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.

Show details on source website

{
  "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 18:31
VLAI
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.

Show details on source website

{
  "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"
    }
  ]
}

GHSA-9M2P-5H5Q-X254

Vulnerability from github – Published: 2022-04-30 18:16 – Updated: 2025-04-23 18:30
VLAI
Details

Cerberus FTP server 1.0 - 1.5 allows remote attackers to cause a denial of service (crash) via a large number of "PASV" requests.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2001-0827"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2001-12-06T05:00:00Z",
    "severity": "MODERATE"
  },
  "details": "Cerberus FTP server 1.0 - 1.5 allows remote attackers to cause a denial of service (crash) via a large number of \"PASV\" requests.",
  "id": "GHSA-9m2p-5h5q-x254",
  "modified": "2025-04-23T18:30:34Z",
  "published": "2022-04-30T18:16:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2001-0827"
    },
    {
      "type": "WEB",
      "url": "http://archive.cert.uni-stuttgart.de/archive/bugtraq/2001/07/msg00070.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/2976"
    }
  ],
  "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-9M37-9R6Q-24CH

Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2022-05-24 17:48
VLAI
Details

An uncontrolled resource consumption vulnerability in Message Queue Telemetry Transport (MQTT) server of Juniper Networks Junos OS allows an attacker to cause MQTT server to crash and restart leading to a Denial of Service (DoS) by sending a stream of specific packets. A Juniper Extension Toolkit (JET) application designed with a listening port uses the Message Queue Telemetry Transport (MQTT) protocol to connect to a mosquitto broker that is running on Junos OS to subscribe for events. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 16.1R1 and later versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-0229"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-22T20:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An uncontrolled resource consumption vulnerability in Message Queue Telemetry Transport (MQTT) server of Juniper Networks Junos OS allows an attacker to cause MQTT server to crash and restart leading to a Denial of Service (DoS) by sending a stream of specific packets. A Juniper Extension Toolkit (JET) application designed with a listening port uses the Message Queue Telemetry Transport (MQTT) protocol to connect to a mosquitto broker that is running on Junos OS to subscribe for events. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 16.1R1 and later versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1.",
  "id": "GHSA-9m37-9r6q-24ch",
  "modified": "2022-05-24T17:48:10Z",
  "published": "2022-05-24T17:48:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0229"
    },
    {
      "type": "WEB",
      "url": "https://kb.juniper.net/JSA11124"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-9M3V-V4R5-PPX7

Vulnerability from github – Published: 2023-06-06 16:43 – Updated: 2024-03-01 15:18
VLAI
Summary
Notation vulnerable to denial of service from high number of artifact signatures
Details

Impact

An attacker who controls or compromises a registry can make the registry serve an infinite number of signatures for the artifact, causing a denial of service to the host machine running notation verify.

Patches

The problem has been fixed in the release v1.0.0-rc.6. Users should upgrade their notation packages to v1.0.0-rc.6 or above.

Workarounds

User should use secure and trusted container registries.

Credits

The notation project would like to thank Adam Korczynski (@AdamKorcz) for responsibly disclosing the issue found during an security audit (facilitated by OSTIF and sponsored by CNCF) and Shiwei Zhang (@shizhMSFT) for root cause analysis.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/notaryproject/notation"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.0-rc.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-33957"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-06T16:43:01Z",
    "nvd_published_at": "2023-06-06T19:15:12Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nAn attacker who controls or compromises a registry can make the registry serve an infinite number of signatures for the artifact, causing a denial of service to the host machine running `notation verify`.\n\n### Patches\nThe problem has been fixed in the release [v1.0.0-rc.6](https://github.com/notaryproject/notation/releases/tag/v1.0.0-rc.6). Users should upgrade their notation packages to [v1.0.0-rc.6](https://github.com/notaryproject/notation/releases/tag/v1.0.0-rc.6) or above.\n\n### Workarounds\nUser should use secure and trusted container registries.\n\n### Credits\nThe `notation` project would like to thank Adam Korczynski (@AdamKorcz) for responsibly disclosing the issue found during an security audit (facilitated by OSTIF and sponsored by CNCF) and Shiwei Zhang (@shizhMSFT) for root cause analysis.",
  "id": "GHSA-9m3v-v4r5-ppx7",
  "modified": "2024-03-01T15:18:49Z",
  "published": "2023-06-06T16:43:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/notaryproject/notation/security/advisories/GHSA-9m3v-v4r5-ppx7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33957"
    },
    {
      "type": "WEB",
      "url": "https://github.com/notaryproject/notation/commit/ed22fde52f6d70ae0b53521bd28c9ccafa868c24"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/notaryproject/notation"
    },
    {
      "type": "WEB",
      "url": "https://github.com/notaryproject/notation/releases/tag/v1.0.0-rc.6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Notation vulnerable to denial of service from high number of artifact signatures"
}

GHSA-9M5W-7XHR-393X

Vulnerability from github – Published: 2024-08-13 18:31 – Updated: 2024-12-03 21:31
VLAI
Details

A DLL hijacking vulnerability in AMD μProf could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-31348"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-427"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-13T17:15:21Z",
    "severity": "HIGH"
  },
  "details": "A DLL hijacking vulnerability in AMD \u03bcProf could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution.",
  "id": "GHSA-9m5w-7xhr-393x",
  "modified": "2024-12-03T21:31:21Z",
  "published": "2024-08-13T18:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31348"
    },
    {
      "type": "WEB",
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-9001"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design

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
Architecture and Design
  • 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
Architecture and Design

Ensure that protocols have specific limits of scale placed on them.

Mitigation
Implementation

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.