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.

5565 vulnerabilities reference this CWE, most recent first.

GHSA-68V5-4XCM-4C57

Vulnerability from github – Published: 2022-05-13 01:50 – Updated: 2024-03-21 03:33
VLAI
Details

** DISPUTED ** Technicolor TC7200.20 devices allow remote attackers to cause a denial of service (networking outage) via a flood of random MAC addresses, as demonstrated by macof. NOTE: Technicolor denies that the described behavior is a vulnerability and states that Wi-Fi traffic is slowed or stopped only while the devices are exposed to a MAC flooding attack. This has been confirmed through testing against official up-to-date versions.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-15852"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-08-25T21:29:00Z",
    "severity": "MODERATE"
  },
  "details": "** DISPUTED ** Technicolor TC7200.20 devices allow remote attackers to cause a denial of service (networking outage) via a flood of random MAC addresses, as demonstrated by macof. NOTE: Technicolor denies that the described behavior is a vulnerability and states that Wi-Fi traffic is slowed or stopped only while the devices are exposed to a MAC flooding attack. This has been confirmed through testing against official up-to-date versions.",
  "id": "GHSA-68v5-4xcm-4c57",
  "modified": "2024-03-21T03:33:31Z",
  "published": "2022-05-13T01:50:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15852"
    },
    {
      "type": "WEB",
      "url": "https://bkd00r.wordpress.com/2018/08/24/cve-2018-15852-exploit-title-cable-modem-technicolor-tc7200-20-wifi-buffer-overflow"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-68XF-4W7R-P3V5

Vulnerability from github – Published: 2022-12-13 18:30 – Updated: 2022-12-15 15:32
VLAI
Details

In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242703217

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-20488"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1284",
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-12-13T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242703217",
  "id": "GHSA-68xf-4w7r-p3v5",
  "modified": "2022-12-15T15:32:12Z",
  "published": "2022-12-13T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20488"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/2022-12-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-693P-QR5P-6W3V

Vulnerability from github – Published: 2022-05-18 00:00 – Updated: 2022-05-27 00:00
VLAI
Details

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (nvidia.ko), where uncontrolled resource consumption can be triggered by an unprivileged regular user, which may lead to denial of service.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-28191"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-05-17T20:15:00Z",
    "severity": "MODERATE"
  },
  "details": "NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (nvidia.ko), where uncontrolled resource consumption can be triggered by an unprivileged regular user, which may lead to denial of service.",
  "id": "GHSA-693p-qr5p-6w3v",
  "modified": "2022-05-27T00:00:51Z",
  "published": "2022-05-18T00:00:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28191"
    },
    {
      "type": "WEB",
      "url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5353"
    }
  ],
  "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-69CP-J43F-RQJ7

Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31
VLAI
Details

In libming 0.4.8, a memory exhaustion vulnerability was found in the function parseSWF_ACTIONRECORD in util/parser.c, which allows remote attackers to cause a denial of service via a crafted file.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-7876"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-03-08T18:29:00Z",
    "severity": "MODERATE"
  },
  "details": "In libming 0.4.8, a memory exhaustion vulnerability was found in the function parseSWF_ACTIONRECORD in util/parser.c, which allows remote attackers to cause a denial of service via a crafted file.",
  "id": "GHSA-69cp-j43f-rqj7",
  "modified": "2022-05-13T01:31:09Z",
  "published": "2022-05-13T01:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7876"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libming/libming/issues/109"
    },
    {
      "type": "WEB",
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892260"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/05/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/47KZ5RYWQMBN5DVDITBVRDNDCSFNBJ3V"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CQNIJH5EQV2D6KEFGY2467ZS4I7TZLXP"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LBFCINUX3XXAPPH77OH6NKACBPFBQXXW"
    }
  ],
  "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"
    }
  ]
}

GHSA-69FX-RR2Q-VW9X

Vulnerability from github – Published: 2023-06-13 21:30 – Updated: 2024-04-04 04:48
VLAI
Details

A denial-of-service vulnerability exists in Rockwell Automation FactoryTalk Transaction Manager. This vulnerability can be exploited by sending a modified packet to port 400. If exploited, the application could potentially crash or experience a high CPU or memory usage condition, causing intermittent application functionality issues. The application would need to be restarted to recover from the DoS.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-2778"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-06-13T21:15:10Z",
    "severity": "HIGH"
  },
  "details": "\nA denial-of-service vulnerability exists in Rockwell Automation FactoryTalk Transaction Manager. This vulnerability can be exploited by sending a modified packet to port 400. If exploited, the application could potentially crash or experience a high CPU or memory usage condition, causing intermittent application functionality issues. The application would need to be restarted to recover from the DoS.",
  "id": "GHSA-69fx-rr2q-vw9x",
  "modified": "2024-04-04T04:48:05Z",
  "published": "2023-06-13T21:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2778"
    },
    {
      "type": "WEB",
      "url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1139744"
    }
  ],
  "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-69GQ-36MP-5W52

Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2022-07-13 00:00
VLAI
Details

Running security scans against the SAN switch can cause config and secnotify processes within the firmware before Brocade Fabric OS v9.0.0, v8.2.2d and v8.2.1e to consume all memory leading to denial of service impacts possibly including a switch panic.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-15383"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-09T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "Running security scans against the SAN switch can cause config and secnotify processes within the firmware before Brocade Fabric OS v9.0.0, v8.2.2d and v8.2.1e to consume all memory leading to denial of service impacts possibly including a switch panic.",
  "id": "GHSA-69gq-36mp-5w52",
  "modified": "2022-07-13T00:00:43Z",
  "published": "2022-05-24T19:04:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15383"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210819-0002"
    },
    {
      "type": "WEB",
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1496"
    }
  ],
  "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-6C2Q-W54R-H6FV

Vulnerability from github – Published: 2024-02-13 15:31 – Updated: 2024-04-18 21:30
VLAI
Details

Uncontrolled Resource Consumption vulnerability in Honeywell Niagara Framework on Windows, Linux, QNX allows Content Spoofing.This issue affects Niagara Framework: before Niagara AX 3.8.1, before Niagara 4.1.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-1309"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-13T14:15:46Z",
    "severity": "MODERATE"
  },
  "details": "Uncontrolled Resource Consumption vulnerability in Honeywell Niagara Framework on Windows, Linux, QNX allows Content Spoofing.This issue affects Niagara Framework: before Niagara AX 3.8.1, before Niagara 4.1.\n\n",
  "id": "GHSA-6c2q-w54r-h6fv",
  "modified": "2024-04-18T21:30:31Z",
  "published": "2024-02-13T15:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1309"
    },
    {
      "type": "WEB",
      "url": "https://process.honeywell.com"
    },
    {
      "type": "WEB",
      "url": "https://www.honeywell.com/us/en/product-security"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/417980"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-6C7F-V79H-5RVH

Vulnerability from github – Published: 2023-01-13 00:30 – Updated: 2023-01-24 21:30
VLAI
Details

An Uncontrolled Resource Consumption vulnerability in TCP processing on the Routing Engine (RE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to send crafted TCP packets destined to the device, resulting in an MBUF leak that ultimately leads to a Denial of Service (DoS). The system does not recover automatically and must be manually restarted to restore service. This issue occurs when crafted TCP packets are sent directly to a configured IPv4 or IPv6 interface on the device. Transit traffic will not trigger this issue. MBUF usage can be monitored through the use of the 'show system buffers' command. For example: user@junos> show system buffers | refresh 5 4054/566/4620 mbufs in use (current/cache/total) ... 4089/531/4620 mbufs in use (current/cache/total) ... 4151/589/4740 mbufs in use (current/cache/total) ... 4213/527/4740 mbufs in use (current/cache/total) This issue affects Juniper Networks Junos OS: 12.3 version 12.3R12-S19 and later versions; 15.1 version 15.1R7-S10 and later versions; 17.3 version 17.3R3-S12 and later versions; 18.4 version 18.4R3-S9 and later versions; 19.1 version 19.1R3-S7 and later versions; 19.2 version 19.2R3-S3 and later versions; 19.3 version 19.3R2-S7, 19.3R3-S3 and later versions prior to 19.3R3-S7; 19.4 version 19.4R2-S7, 19.4R3-S5 and later versions prior to 19.4R3-S10; 20.1 version 20.1R3-S1 and later versions; 20.2 version 20.2R3-S2 and later versions prior to 20.2R3-S6; 20.3 version 20.3R3-S1 and later versions prior to 20.3R3-S6; 20.4 version 20.4R2-S2, 20.4R3 and later versions prior to 20.4R3-S5; 21.1 version 21.1R2 and later versions prior to 21.1R3-S4; 21.2 version 21.2R1-S1, 21.2R2 and later versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2; 22.3 versions prior to 22.3R1-S1, 22.3R2.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-22396"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-13T00:15:00Z",
    "severity": "HIGH"
  },
  "details": "An Uncontrolled Resource Consumption vulnerability in TCP processing on the Routing Engine (RE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to send crafted TCP packets destined to the device, resulting in an MBUF leak that ultimately leads to a Denial of Service (DoS). The system does not recover automatically and must be manually restarted to restore service. This issue occurs when crafted TCP packets are sent directly to a configured IPv4 or IPv6 interface on the device. Transit traffic will not trigger this issue. MBUF usage can be monitored through the use of the \u0027show system buffers\u0027 command. For example: user@junos\u003e show system buffers | refresh 5 4054/566/4620 mbufs in use (current/cache/total) ... 4089/531/4620 mbufs in use (current/cache/total) ... 4151/589/4740 mbufs in use (current/cache/total) ... 4213/527/4740 mbufs in use (current/cache/total) This issue affects Juniper Networks Junos OS: 12.3 version 12.3R12-S19 and later versions; 15.1 version 15.1R7-S10 and later versions; 17.3 version 17.3R3-S12 and later versions; 18.4 version 18.4R3-S9 and later versions; 19.1 version 19.1R3-S7 and later versions; 19.2 version 19.2R3-S3 and later versions; 19.3 version 19.3R2-S7, 19.3R3-S3 and later versions prior to 19.3R3-S7; 19.4 version 19.4R2-S7, 19.4R3-S5 and later versions prior to 19.4R3-S10; 20.1 version 20.1R3-S1 and later versions; 20.2 version 20.2R3-S2 and later versions prior to 20.2R3-S6; 20.3 version 20.3R3-S1 and later versions prior to 20.3R3-S6; 20.4 version 20.4R2-S2, 20.4R3 and later versions prior to 20.4R3-S5; 21.1 version 21.1R2 and later versions prior to 21.1R3-S4; 21.2 version 21.2R1-S1, 21.2R2 and later versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2; 22.3 versions prior to 22.3R1-S1, 22.3R2.",
  "id": "GHSA-6c7f-v79h-5rvh",
  "modified": "2023-01-24T21:30:37Z",
  "published": "2023-01-13T00:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22396"
    },
    {
      "type": "WEB",
      "url": "https://kb.juniper.net/JSA70192"
    }
  ],
  "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-6C9P-V7M9-748V

Vulnerability from github – Published: 2022-05-24 17:26 – Updated: 2022-05-24 17:26
VLAI
Details

Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier have a stack exhaustion vulnerability. Successful exploitation could lead to application denial-of-service.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-9702"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-08-19T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier have a stack exhaustion vulnerability. Successful exploitation could lead to application denial-of-service.",
  "id": "GHSA-6c9p-v7m9-748v",
  "modified": "2022-05-24T17:26:10Z",
  "published": "2022-05-24T17:26:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9702"
    },
    {
      "type": "WEB",
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb20-48.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-6CCX-CMHG-89C5

Vulnerability from github – Published: 2022-05-24 19:14 – Updated: 2022-08-31 00:00
VLAI
Details

On version 15.1.x before 15.1.3, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6, when the brute force protection feature of BIG-IP Advanced WAF or BIG-IP ASM is enabled on a virtual server and the virtual server is under brute force attack, the MySQL database may run out of disk space due to lack of row limit on undisclosed tables in the MYSQL database. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-23053"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-09-14T13:15:00Z",
    "severity": "MODERATE"
  },
  "details": "On version 15.1.x before 15.1.3, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6, when the brute force protection feature of BIG-IP Advanced WAF or BIG-IP ASM is enabled on a virtual server and the virtual server is under brute force attack, the MySQL database may run out of disk space due to lack of row limit on undisclosed tables in the MYSQL database. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "GHSA-6ccx-cmhg-89c5",
  "modified": "2022-08-31T00:00:20Z",
  "published": "2022-05-24T19:14:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23053"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K36942191"
    }
  ],
  "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
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.