CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5486 vulnerabilities reference this CWE, most recent first.
GHSA-358W-HQPF-Q255
Vulnerability from github – Published: 2026-05-12 21:31 – Updated: 2026-05-12 21:31Adobe Commerce versions 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 and earlier are affected by an Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to exhaust system resources, resulting in an application denial-of-service condition. Exploitation of this issue does not require user interaction.
{
"affected": [],
"aliases": [
"CVE-2026-34648"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-12T20:16:35Z",
"severity": "HIGH"
},
"details": "Adobe Commerce versions 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 and earlier are affected by an Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to exhaust system resources, resulting in an application denial-of-service condition. Exploitation of this issue does not require user interaction.",
"id": "GHSA-358w-hqpf-q255",
"modified": "2026-05-12T21:31:33Z",
"published": "2026-05-12T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34648"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/magento/apsb26-49.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-35GG-5CVH-W445
Vulnerability from github – Published: 2022-05-24 17:29 – Updated: 2025-10-22 00:31Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.
{
"affected": [],
"aliases": [
"CVE-2020-3569"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-09-23T01:15:00Z",
"severity": "HIGH"
},
"details": "Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.",
"id": "GHSA-35gg-5cvh-w445",
"modified": "2025-10-22T00:31:58Z",
"published": "2022-05-24T17:29:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-3569"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3569"
}
],
"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-35GH-9RR7-FW4G
Vulnerability from github – Published: 2023-10-30 18:30 – Updated: 2023-11-07 03:30In Minikin, there is a possible way to trigger ANR by showing a malicious message due to resource exhaustion. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2023-21339"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-30T17:15:49Z",
"severity": "HIGH"
},
"details": "In Minikin, there is a possible way to trigger ANR by showing a malicious message due to resource exhaustion. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-35gh-9rr7-fw4g",
"modified": "2023-11-07T03:30:25Z",
"published": "2023-10-30T18:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21339"
},
{
"type": "WEB",
"url": "https://source.android.com/docs/security/bulletin/android-14"
}
],
"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-35P3-6J45-PRWM
Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-21 18:35A vulnerability in aimhubio/aim version 3.25.0 allows for a denial of service (DoS) attack. The issue arises when a large number of tracked metrics are retrieved simultaneously from the Aim web API, causing the web server to become unresponsive. The root cause is the lack of a limit on the number of metrics that can be requested per call, combined with the server's single-threaded nature, leading to excessive resource consumption and blocking of the server.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "aim"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.25.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-12778"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2025-03-21T18:35:15Z",
"nvd_published_at": "2025-03-20T10:15:30Z",
"severity": "HIGH"
},
"details": "A vulnerability in aimhubio/aim version 3.25.0 allows for a denial of service (DoS) attack. The issue arises when a large number of tracked metrics are retrieved simultaneously from the Aim web API, causing the web server to become unresponsive. The root cause is the lack of a limit on the number of metrics that can be requested per call, combined with the server\u0027s single-threaded nature, leading to excessive resource consumption and blocking of the server.",
"id": "GHSA-35p3-6j45-prwm",
"modified": "2025-03-21T18:35:15Z",
"published": "2025-03-20T12:32:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-12778"
},
{
"type": "PACKAGE",
"url": "https://github.com/aimhubio/aim"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/892a9eee-0251-4e57-94a4-dad2e7f32715"
}
],
"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"
}
],
"summary": "Aim Uncontrolled Resource Consumption vulnerability"
}
GHSA-35Q2-47Q7-3PC3
Vulnerability from github – Published: 2021-04-27 15:56 – Updated: 2022-08-11 00:21Impact
When a client is in monitoring mode, the regex begin used to detected monitor messages could cause exponential backtracking on some strings. This issue could lead to a denial of service.
Patches
The problem was fixed in commit 2d11b6d and was released in version 3.1.1.
References
1569 (GHSL-2021-026)
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "redis"
},
"ranges": [
{
"events": [
{
"introduced": "2.6.0"
},
{
"fixed": "3.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-29469"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-23T18:11:39Z",
"nvd_published_at": "2021-04-23T18:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nWhen a client is in monitoring mode, the regex begin used to detected monitor messages could cause exponential backtracking on some strings. This issue could lead to a denial of service.\n\n### Patches\nThe problem was fixed in commit [`2d11b6d`](https://github.com/NodeRedis/node-redis/commit/2d11b6dc9b9774464a91fb4b448bad8bf699629e) and was released in version `3.1.1`.\n\n### References\n#1569 (GHSL-2021-026)",
"id": "GHSA-35q2-47q7-3pc3",
"modified": "2022-08-11T00:21:37Z",
"published": "2021-04-27T15:56:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/NodeRedis/node-redis/security/advisories/GHSA-35q2-47q7-3pc3"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29469"
},
{
"type": "WEB",
"url": "https://github.com/NodeRedis/node-redis/commit/2d11b6dc9b9774464a91fb4b448bad8bf699629e"
},
{
"type": "WEB",
"url": "https://github.com/NodeRedis/node-redis/releases/tag/v3.1.1"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210611-0010"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Node-Redis potential exponential regex in monitor mode"
}
GHSA-35W2-Q5F9-8244
Vulnerability from github – Published: 2025-07-05 00:30 – Updated: 2025-07-05 00:30A vulnerability has been found in IROAD Dashcam Q9 up to 20250624 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component MFA Pairing Request Handler. The manipulation leads to allocation of resources. The attack needs to be done within the local network. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-7070"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-04T22:15:22Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in IROAD Dashcam Q9 up to 20250624 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component MFA Pairing Request Handler. The manipulation leads to allocation of resources. The attack needs to be done within the local network. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-35w2-q5f9-8244",
"modified": "2025-07-05T00:30:23Z",
"published": "2025-07-05T00:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7070"
},
{
"type": "WEB",
"url": "https://github.com/geo-chen/IROAD-V?tab=readme-ov-file#finding-8---mfa-spam-to-induce-device-pairing-fatigue"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.314905"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.314905"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.603298"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-35W7-H3V9-8QW4
Vulnerability from github – Published: 2023-10-10 15:30 – Updated: 2025-11-04 21:30A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.
{
"affected": [],
"aliases": [
"CVE-2023-43786"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-10T13:15:22Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.",
"id": "GHSA-35w7-h3v9-8qw4",
"modified": "2025-11-04T21:30:43Z",
"published": "2023-10-10T15:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43786"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2145"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2973"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-43786"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2242253"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00005.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63IBRFLQVZSMOAZBZOBKFWJP26ILRAGQ"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20231103-0006"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/01/24/9"
}
],
"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-363M-F7WV-QPFM
Vulnerability from github – Published: 2025-01-15 00:30 – Updated: 2025-01-16 18:30Flatnotes <v5.3.1 is vulnerable to denial of service through the upload image function.
{
"affected": [],
"aliases": [
"CVE-2024-54730"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T23:15:08Z",
"severity": "HIGH"
},
"details": "Flatnotes \u003cv5.3.1 is vulnerable to denial of service through the upload image function.",
"id": "GHSA-363m-f7wv-qpfm",
"modified": "2025-01-16T18:30:59Z",
"published": "2025-01-15T00:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54730"
},
{
"type": "WEB",
"url": "https://github.com/dullage/flatnotes/issues/259"
},
{
"type": "WEB",
"url": "https://github.com/Startr4ck/CVE_lists/blob/main/flatnotes/flatnotes%20webserver%20dos.md"
}
],
"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-363V-WF7V-F7X9
Vulnerability from github – Published: 2022-01-12 00:01 – Updated: 2024-11-14 21:31Windows IKE Extension Denial of Service Vulnerability. This CVE ID is unique from CVE-2022-21848, CVE-2022-21883, CVE-2022-21889, CVE-2022-21890.
{
"affected": [],
"aliases": [
"CVE-2022-21843"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-11T21:15:00Z",
"severity": "HIGH"
},
"details": "Windows IKE Extension Denial of Service Vulnerability. This CVE ID is unique from CVE-2022-21848, CVE-2022-21883, CVE-2022-21889, CVE-2022-21890.",
"id": "GHSA-363v-wf7v-f7x9",
"modified": "2024-11-14T21:31:43Z",
"published": "2022-01-12T00:01:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21843"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21843"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21843"
}
],
"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-36G8-62QV-5957
Vulnerability from github – Published: 2024-05-14 20:13 – Updated: 2024-05-14 20:13Problem
The ShowImageController (eID tx_cms_showpic) lacks a cryptographic HMAC-signature on the frame HTTP query parameter (e.g. /index.php?eID=tx_cms_showpic?file=3&...&frame=12345).
This allows adversaries to instruct the system to produce an arbitrary number of thumbnail images on the server side.
Solution
Update to TYPO3 versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, 13.1.1 that fix the problem described.
ℹ️ Strong security defaults - Manual actions required
The frame HTTP query parameter is now ignored, since it could not be used by core APIs.
The new feature flag security.frontend.allowInsecureFrameOptionInShowImageController – which is disabled per default – can be used to reactivate the previous behavior.
Credits
Thanks to TYPO3 security team member Torben Hansen who reported this issue and to TYPO3 core & security team members Benjamin Mack and Benjamin Franzke who fixed the issue.
References
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 9.5.47"
},
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms-core"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.5.48"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 10.4.44"
},
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms-core"
},
"ranges": [
{
"events": [
{
"introduced": "10.0.0"
},
{
"fixed": "10.4.45"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 11.5.36"
},
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms-core"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0"
},
{
"fixed": "11.5.37"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 12.4.14"
},
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms-core"
},
"ranges": [
{
"events": [
{
"introduced": "12.0.0"
},
{
"fixed": "12.4.15"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 13.1.0"
},
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms-core"
},
"ranges": [
{
"events": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-34358"
],
"database_specific": {
"cwe_ids": [
"CWE-200",
"CWE-347",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-05-14T20:13:34Z",
"nvd_published_at": "2024-05-14T16:17:25Z",
"severity": "MODERATE"
},
"details": "### Problem\nThe `ShowImageController` (_eID tx_cms_showpic_) lacks a cryptographic HMAC-signature on the `frame` HTTP query parameter (e.g. `/index.php?eID=tx_cms_showpic?file=3\u0026...\u0026frame=12345`).\nThis allows adversaries to instruct the system to produce an arbitrary number of thumbnail images on the server side.\n\n### Solution\nUpdate to TYPO3 versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, 13.1.1 that fix the problem described.\n\n#### \u2139\ufe0f **Strong security defaults - Manual actions required**\n\nThe `frame` HTTP query parameter is now ignored, since it could not be used by core APIs.\n\nThe new feature flag `security.frontend.allowInsecureFrameOptionInShowImageController` \u2013 which is disabled per default \u2013 can be used to reactivate the previous behavior.\n\n### Credits\nThanks to TYPO3 security team member Torben Hansen who reported this issue and to TYPO3 core \u0026 security team members Benjamin Mack and Benjamin Franzke who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2024-010](https://typo3.org/security/advisory/typo3-core-sa-2024-010)\n",
"id": "GHSA-36g8-62qv-5957",
"modified": "2024-05-14T20:13:34Z",
"published": "2024-05-14T20:13:34Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/TYPO3/typo3/security/advisories/GHSA-36g8-62qv-5957"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34358"
},
{
"type": "WEB",
"url": "https://github.com/TYPO3/typo3/commit/05c95fed869a1a6dcca06c7077b83b6ea866ff14"
},
{
"type": "WEB",
"url": "https://github.com/TYPO3/typo3/commit/1e70ebf736935413b0531004839362b4fb0755a5"
},
{
"type": "WEB",
"url": "https://github.com/TYPO3/typo3/commit/df7909b6a1cf0f12a42994d0cc3376b607746142"
},
{
"type": "PACKAGE",
"url": "https://github.com/TYPO3/typo3"
},
{
"type": "WEB",
"url": "https://typo3.org/security/advisory/typo3-core-sa-2024-010"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "TYPO3 vulnerable to an Uncontrolled Resource Consumption in the ShowImageController"
}
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.