CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5570 vulnerabilities reference this CWE, most recent first.
GHSA-24Q2-4VQQ-QCX6
Vulnerability from github – Published: 2023-04-05 09:30 – Updated: 2026-02-23 09:31User-controlled operations could have allowed Denial of Service in M-Files Server before 23.4.12528.1 due to uncontrolled memory consumption.
{
"affected": [],
"aliases": [
"CVE-2023-0382"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-05T07:15:00Z",
"severity": "MODERATE"
},
"details": "User-controlled operations could have allowed Denial of Service in M-Files Server before 23.4.12528.1 due to uncontrolled memory consumption.",
"id": "GHSA-24q2-4vqq-qcx6",
"modified": "2026-02-23T09:31:17Z",
"published": "2023-04-05T09:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0382"
},
{
"type": "WEB",
"url": "https://empower.m-files.com/security-advisories/CVE-2023-0382"
},
{
"type": "WEB",
"url": "https://product.m-files.com/security-advisories/cve-2023-0382"
},
{
"type": "WEB",
"url": "https://www.m-files.com/about/trust-center/security-advisories/cve-2023-0382"
}
],
"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-24Q7-JRRV-9X9W
Vulnerability from github – Published: 2024-07-17 00:32 – Updated: 2025-11-04 18:31Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.37 and prior and 8.4.0 and prior. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2024-21142"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-16T23:15:15Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.37 and prior and 8.4.0 and prior. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-24q7-jrrv-9x9w",
"modified": "2025-11-04T18:31:07Z",
"published": "2024-07-17T00:32:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21142"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240801-0001"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2024.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2528-JW5Q-WW88
Vulnerability from github – Published: 2026-05-06 17:57 – Updated: 2026-05-06 17:57Impact
Anyone trying to generate a prime and testing the primality of a number.
Patches
https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575
Workarounds
Using the GMP extension would probably help, assuming that one has its own guardrails.
Resources
https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575 https://www.usenix.org/system/files/conference/usenixsecurity25/sec25cycle1-prepub-599-shi-bing.pdf
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "0.1.1"
},
{
"fixed": "1.0.23"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.0.47"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.36"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-27354"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T17:57:10Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Impact\nAnyone trying to generate a prime and testing the primality of a number.\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575\n\n### Workarounds\nUsing the GMP extension would probably help, assuming that one has its own guardrails.\n\n### Resources\nhttps://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575\nhttps://www.usenix.org/system/files/conference/usenixsecurity25/sec25cycle1-prepub-599-shi-bing.pdf",
"id": "GHSA-2528-jw5q-ww88",
"modified": "2026-05-06T17:57:10Z",
"published": "2026-05-06T17:57:10Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/security/advisories/GHSA-2528-jw5q-ww88"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27354"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/commit/2870c8fab3f132d2ed40a66c97a36fe5ab625698"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/commit/c55b75199ec8d12cec6eadf6da99da4a3712fe56"
},
{
"type": "WEB",
"url": "https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b"
},
{
"type": "WEB",
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27354.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/phpseclib/phpseclib"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00003.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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "phpseclib: guardrails needed on isPrime and randomPrime"
}
GHSA-2577-J9HH-F6G7
Vulnerability from github – Published: 2025-10-21 21:33 – Updated: 2025-10-21 21:33Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.43, 8.4.0-8.4.6 and 9.0.0-9.4.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2025-53044"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-21T20:20:41Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.43, 8.4.0-8.4.6 and 9.0.0-9.4.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-2577-j9hh-f6g7",
"modified": "2025-10-21T21:33:41Z",
"published": "2025-10-21T21:33:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53044"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuoct2025.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2584-CXMX-J3X4
Vulnerability from github – Published: 2023-09-18 09:30 – Updated: 2024-04-04 07:43Certain WithSecure products allow a remote crash of a scanning engine via unpacking of a PE file. This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, Linux Security 64 12.0 , Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1.
{
"affected": [],
"aliases": [
"CVE-2023-42523"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-18T07:15:37Z",
"severity": "HIGH"
},
"details": "Certain WithSecure products allow a remote crash of a scanning engine via unpacking of a PE file. This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, Linux Security 64 12.0 , Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1.",
"id": "GHSA-2584-cxmx-j3x4",
"modified": "2024-04-04T07:43:02Z",
"published": "2023-09-18T09:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42523"
},
{
"type": "WEB",
"url": "https://www.withsecure.com/en/support/security-advisories"
}
],
"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-258X-2WFM-XJRC
Vulnerability from github – Published: 2022-12-13 18:30 – Updated: 2022-12-15 06:30In createNotificationChannel of NotificationManager.java, there is a possible way to make the device unusable and require factory reset due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-240422263
{
"affected": [],
"aliases": [
"CVE-2022-20482"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-13T16:15:00Z",
"severity": "MODERATE"
},
"details": "In createNotificationChannel of NotificationManager.java, there is a possible way to make the device unusable and require factory reset due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-240422263",
"id": "GHSA-258x-2wfm-xjrc",
"modified": "2022-12-15T06:30:29Z",
"published": "2022-12-13T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20482"
},
{
"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:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-259W-8HF6-59C2
Vulnerability from github – Published: 2023-02-16 14:12 – Updated: 2024-09-06 21:37Impact
When importing an OCI image, there was no limit on the number of bytes read for certain files. A maliciously crafted image with a large file where a limit was not applied could cause a denial of service.
Patches
This bug has been fixed in containerd 1.6.18 and 1.5.18. Users should update to these versions to resolve the issue.
Workarounds
Ensure that only trusted images are used and that only trusted users have permissions to import images.
Credits
The containerd project would like to thank David Korczynski and Adam Korczynski of ADA Logics for responsibly disclosing this issue in accordance with the containerd security policy during a security fuzzing audit sponsored by CNCF.
For more information
If you have any questions or comments about this advisory:
- Open an issue in containerd
- Email us at security@containerd.io
To report a security issue in containerd: * Report a new vulnerability * Email us at security@containerd.io
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/containerd/containerd"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.18"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/containerd/containerd"
},
"ranges": [
{
"events": [
{
"introduced": "1.6.0"
},
{
"fixed": "1.6.18"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-25153"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-16T14:12:36Z",
"nvd_published_at": "2023-02-16T15:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\nWhen importing an OCI image, there was no limit on the number of bytes read for certain files. A maliciously crafted image with a large file where a limit was not applied could cause a denial of service.\n\n### Patches\n\nThis bug has been fixed in containerd 1.6.18 and 1.5.18. Users should update to these versions to resolve the issue.\n\n### Workarounds\n\nEnsure that only trusted images are used and that only trusted users have permissions to import images. \n\n### Credits\n\nThe containerd project would like to thank [David Korczynski](https://github.com/DavidKorczynski) and [Adam Korczynski](https://github.com/AdamKorcz) of ADA Logics for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md) during a security fuzzing audit sponsored by CNCF.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose)\n* Email us at [security@containerd.io](mailto:security@containerd.io)\n\nTo report a security issue in containerd:\n* [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new)\n* Email us at [security@containerd.io](mailto:security@containerd.io)",
"id": "GHSA-259w-8hf6-59c2",
"modified": "2024-09-06T21:37:22Z",
"published": "2023-02-16T14:12:36Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/containerd/containerd/security/advisories/GHSA-259w-8hf6-59c2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25153"
},
{
"type": "WEB",
"url": "https://github.com/containerd/containerd/commit/0c314901076a74a7b797a545d2f462285fdbb8c4"
},
{
"type": "PACKAGE",
"url": "https://github.com/containerd/containerd"
},
{
"type": "WEB",
"url": "https://github.com/containerd/containerd/releases/tag/v1.5.18"
},
{
"type": "WEB",
"url": "https://github.com/containerd/containerd/releases/tag/v1.6.18"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2023-1573"
}
],
"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"
}
],
"summary": "OCI image importer memory exhaustion in github.com/containerd/containerd"
}
GHSA-25HF-M67J-23HC
Vulnerability from github – Published: 2022-05-24 19:05 – Updated: 2022-05-24 19:05An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
{
"affected": [],
"aliases": [
"CVE-2021-33824"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-18T20:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.",
"id": "GHSA-25hf-m67j-23hc",
"modified": "2022-05-24T19:05:38Z",
"published": "2022-05-24T19:05:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33824"
},
{
"type": "WEB",
"url": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33824.md"
},
{
"type": "WEB",
"url": "https://github.com/shekyan/slowhttptest"
},
{
"type": "WEB",
"url": "https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-mb3180-mb3280-mb3480-series"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-25MM-W878-4W74
Vulnerability from github – Published: 2024-11-19 21:31 – Updated: 2024-11-19 21:31Uncontrolled resource consumption in some Zoom Apps before version 6.2.0 may allow an authenticated user to conduct a denial of service via network access.
{
"affected": [],
"aliases": [
"CVE-2024-45420"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-19T20:15:31Z",
"severity": "MODERATE"
},
"details": "Uncontrolled resource consumption in some Zoom Apps before version 6.2.0 may allow an authenticated user to conduct a denial of service via network access.",
"id": "GHSA-25mm-w878-4w74",
"modified": "2024-11-19T21:31:33Z",
"published": "2024-11-19T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45420"
},
{
"type": "WEB",
"url": "https://www.zoom.com/en/trust/security-bulletin/zsb-24042"
}
],
"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-25MR-W95M-82V7
Vulnerability from github – Published: 2023-06-20 09:30 – Updated: 2024-01-12 09:30When adding an external mail account, processing of POP3 "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue POP3 service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted POP3 server response to reasonable length/size. No publicly available exploits are known.
{
"affected": [],
"aliases": [
"CVE-2023-26434"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-20T08:15:09Z",
"severity": "MODERATE"
},
"details": "When adding an external mail account, processing of POP3 \"capabilities\" responses are not limited to plausible sizes. Attacker with access to a rogue POP3 service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted POP3 server response to reasonable length/size. No publicly available exploits are known.\n\n",
"id": "GHSA-25mr-w95m-82v7",
"modified": "2024-01-12T09:30:27Z",
"published": "2023-06-20T09:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26434"
},
{
"type": "WEB",
"url": "https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json"
},
{
"type": "WEB",
"url": "https://documentation.open-xchange.com/security/advisories/csaf/oxas-adv-2023-0002.json"
},
{
"type": "WEB",
"url": "https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Jun/8"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
Mitigation
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
Mitigation
- Mitigation of resource exhaustion attacks requires that the target system either:
- The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
- The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- recognizes the attack and denies that user further access for a given amount of time, or
- uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Mitigation
Ensure that protocols have specific limits of scale placed on them.
Mitigation
Ensure that all failures in resource allocation place the system into a safe posture.
CAPEC-147: XML Ping of the Death
An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
CAPEC-227: Sustained Client Engagement
An adversary attempts to deny legitimate users access to a resource by continually engaging a specific resource in an attempt to keep the resource tied up as long as possible. The adversary's primary goal is not to crash or flood the target, which would alert defenders; rather it is to repeatedly perform actions or abuse algorithmic flaws such that a given resource is tied up and not available to a legitimate user. By carefully crafting a requests that keep the resource engaged through what is seemingly benign requests, legitimate users are limited or completely denied access to the resource.
CAPEC-492: Regular Expression Exponential Blowup
An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.