CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
6465 vulnerabilities reference this CWE, most recent first.
GHSA-J3HG-9RP3-5HW9
Vulnerability from github – Published: 2026-10-09 20:57 – Updated: 2026-10-09 20:57Summary
In Nginx UI versions 2.5.0 through 2.5.x, the node-signature authentication path staged an attacker-controlled request body in a temporary file and synchronized it to disk before validating the body digest and cryptographic signature. An unauthenticated remote client that can reach the API can provide syntactically valid signature metadata and cause storage and I/O consumption before the request is rejected.
Impact
Concurrent malicious requests can consume temporary filesystem capacity, disk I/O, and request-processing resources, potentially disrupting Nginx UI and other services that share the filesystem. The issue affects availability only; it does not bypass authentication and does not provide confidentiality or integrity impact. Deployment-specific reverse-proxy body limits, filesystem quotas, and concurrency limits may reduce practical impact.
Remediation
Upgrade to Nginx UI 2.6.0 or later. The fix authenticates signed request metadata before staging the body and enforces an application-level streaming size limit with cleanup for rejected requests.
Fix commit: https://github.com/0xJacky/nginx-ui/commit/8c9b9a1aff218ee6c980d047b750e49da3c46796
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/0xJacky/Nginx-UI"
},
"ranges": [
{
"events": [
{
"introduced": "1.9.10-0.20260729084040-acb59fdd81db"
},
{
"fixed": "1.9.10-0.20260901043436-8c9b9a1aff21"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-107805"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-10-09T20:57:08Z",
"nvd_published_at": "2026-10-09T15:17:09Z",
"severity": "HIGH"
},
"details": "## Summary\n\nIn Nginx UI versions 2.5.0 through 2.5.x, the node-signature authentication path staged an attacker-controlled request body in a temporary file and synchronized it to disk before validating the body digest and cryptographic signature. An unauthenticated remote client that can reach the API can provide syntactically valid signature metadata and cause storage and I/O consumption before the request is rejected.\n\n## Impact\n\nConcurrent malicious requests can consume temporary filesystem capacity, disk I/O, and request-processing resources, potentially disrupting Nginx UI and other services that share the filesystem. The issue affects availability only; it does not bypass authentication and does not provide confidentiality or integrity impact. Deployment-specific reverse-proxy body limits, filesystem quotas, and concurrency limits may reduce practical impact.\n\n## Remediation\n\nUpgrade to Nginx UI 2.6.0 or later. The fix authenticates signed request metadata before staging the body and enforces an application-level streaming size limit with cleanup for rejected requests.\n\nFix commit: https://github.com/0xJacky/nginx-ui/commit/8c9b9a1aff218ee6c980d047b750e49da3c46796",
"id": "GHSA-j3hg-9rp3-5hw9",
"modified": "2026-10-09T20:57:08Z",
"published": "2026-10-09T20:57:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-j3hg-9rp3-5hw9"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107805"
},
{
"type": "WEB",
"url": "https://github.com/0xJacky/nginx-ui/commit/8c9b9a1aff218ee6c980d047b750e49da3c46796"
},
{
"type": "PACKAGE",
"url": "https://github.com/0xJacky/nginx-ui"
},
{
"type": "WEB",
"url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.6.0"
}
],
"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": "Nginx UI: Unauthenticated signed-request body staging can exhaust temporary storage"
}
GHSA-J3HH-FX42-VQQ9
Vulnerability from github – Published: 2023-04-12 21:30 – Updated: 2025-11-04 00:30RPCoRDMA dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection or crafted capture file
{
"affected": [],
"aliases": [
"CVE-2023-1992"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-12T21:15:00Z",
"severity": "HIGH"
},
"details": "RPCoRDMA dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection or crafted capture file",
"id": "GHSA-j3hh-fx42-vqq9",
"modified": "2025-11-04T00:30:36Z",
"published": "2023-04-12T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1992"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-1992.json"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/issues/18852"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00029.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EHLTD25WNQSPQNELX52UH6YLP4TBLKTT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZA7IMATNNQPLIM6WMRPM3T5ZY24NRR2"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PFJERBHVWYLYWXO2B3V47QH66IEB6EZ3"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EHLTD25WNQSPQNELX52UH6YLP4TBLKTT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZA7IMATNNQPLIM6WMRPM3T5ZY24NRR2"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PFJERBHVWYLYWXO2B3V47QH66IEB6EZ3"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-02"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5429"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2023-09.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-J3J7-WJCV-WXWJ
Vulnerability from github – Published: 2025-08-12 18:31 – Updated: 2025-08-12 18:31Uncontrolled resource consumption in the Linux kernel-mode driver for some Intel(R) 700 Series Ethernet before version 2.28.5 may allow an authenticated user to potentially enable denial of service.
{
"affected": [],
"aliases": [
"CVE-2025-26697"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T17:15:36Z",
"severity": "MODERATE"
},
"details": "Uncontrolled resource consumption in the Linux kernel-mode driver for some Intel(R) 700 Series Ethernet before version 2.28.5 may allow an authenticated user to potentially enable denial of service.",
"id": "GHSA-j3j7-wjcv-wxwj",
"modified": "2025-08-12T18:31:29Z",
"published": "2025-08-12T18:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26697"
},
{
"type": "WEB",
"url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01335.html"
}
],
"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:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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-J3P2-J2WJ-5W6G
Vulnerability from github – Published: 2024-03-14 18:30 – Updated: 2024-04-05 09:30Uncontrolled resource consumption for some Intel(R) SPS firmware versions may allow a privileged user to potentially enable denial of service via network access.
{
"affected": [],
"aliases": [
"CVE-2023-35191"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-14T17:15:51Z",
"severity": "MODERATE"
},
"details": "Uncontrolled resource consumption for some Intel(R) SPS firmware versions may allow a privileged user to potentially enable denial of service via network access.",
"id": "GHSA-j3p2-j2wj-5w6g",
"modified": "2024-04-05T09:30:38Z",
"published": "2024-03-14T18:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35191"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240405-0005"
},
{
"type": "WEB",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00923.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-J3Q9-MXJG-W52F
Vulnerability from github – Published: 2026-03-27 22:23 – Updated: 2026-03-27 22:23Impact
A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as {a}{b}{c}:z. The generated regex grows exponentially with the number of groups, causing denial of service.
Patches
Fixed in version 8.4.0.
Workarounds
Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "path-to-regexp"
},
"ranges": [
{
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.4.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-4926"
],
"database_specific": {
"cwe_ids": [
"CWE-1333",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-27T22:23:27Z",
"nvd_published_at": "2026-03-26T19:17:08Z",
"severity": "HIGH"
},
"details": "### Impact\n\nA bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service.\n\n### Patches\n\nFixed in version 8.4.0.\n\n### Workarounds\n\nLimit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.",
"id": "GHSA-j3q9-mxjg-w52f",
"modified": "2026-03-27T22:23:27Z",
"published": "2026-03-27T22:23:27Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-j3q9-mxjg-w52f"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4926"
},
{
"type": "WEB",
"url": "https://cna.openjsf.org/security-advisories.html"
},
{
"type": "PACKAGE",
"url": "https://github.com/pillarjs/path-to-regexp"
}
],
"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": "path-to-regexp vulnerable to Denial of Service via sequential optional groups"
}
GHSA-J3V2-453Q-PW6H
Vulnerability from github – Published: 2025-06-24 21:30 – Updated: 2025-06-24 21:30An issue in Realtek RTL8762EKF-EVB RTL8762E SDK v1.4.0 allows attackers to cause a Denial of Service (DoS) via sending a crafted before a pairing public key is received during a Bluetooth connection attempt.
{
"affected": [],
"aliases": [
"CVE-2025-44531"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-24T16:15:27Z",
"severity": "HIGH"
},
"details": "An issue in Realtek RTL8762EKF-EVB RTL8762E SDK v1.4.0 allows attackers to cause a Denial of Service (DoS) via sending a crafted before a pairing public key is received during a Bluetooth connection attempt.",
"id": "GHSA-j3v2-453q-pw6h",
"modified": "2025-06-24T21:30:28Z",
"published": "2025-06-24T21:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-44531"
},
{
"type": "WEB",
"url": "https://github.com/yangting111/BLE_TEST/blob/main/result/PoC/Realtek/Pairing_Random_Before_Pairing_Public_Key.md"
},
{
"type": "WEB",
"url": "http://realtek.com"
},
{
"type": "WEB",
"url": "http://rtl8762ekf-evb.com"
}
],
"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-J3V9-6GC7-VF5F
Vulnerability from github – Published: 2025-05-16 00:31 – Updated: 2025-05-16 17:44A vulnerability was found in Meteor up to 3.2.1 and classified as problematic. This issue affects the function Object.assign of the file packages/ddp-server/livedata_server.js. The manipulation of the argument forwardedFor leads to inefficient regular expression complexity. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.2 is able to address this issue. The identifier of the patch is f7ea6817b90952baaea9baace2a3b4366fee6a63. It is recommended to upgrade the affected component.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "meteor"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.2.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-4727"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-05-16T17:44:54Z",
"nvd_published_at": "2025-05-15T23:15:59Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in Meteor up to 3.2.1 and classified as problematic. This issue affects the function Object.assign of the file packages/ddp-server/livedata_server.js. The manipulation of the argument forwardedFor leads to inefficient regular expression complexity. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.2 is able to address this issue. The identifier of the patch is f7ea6817b90952baaea9baace2a3b4366fee6a63. It is recommended to upgrade the affected component.",
"id": "GHSA-j3v9-6gc7-vf5f",
"modified": "2025-05-16T17:44:54Z",
"published": "2025-05-16T00:31:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4727"
},
{
"type": "WEB",
"url": "https://github.com/meteor/meteor/issues/13713"
},
{
"type": "WEB",
"url": "https://github.com/meteor/meteor/pull/13721"
},
{
"type": "WEB",
"url": "https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63"
},
{
"type": "PACKAGE",
"url": "https://github.com/meteor/meteor"
},
{
"type": "WEB",
"url": "https://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.309029"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.309029"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.570441"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Meteor Affected By Inefficient Regular Expression Complexity"
}
GHSA-J3X4-2RGC-65G3
Vulnerability from github – Published: 2022-07-07 00:00 – Updated: 2022-07-15 00:00A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incorrect handling of multiple simultaneous device registrations on Cisco SSM On-Prem. An attacker could exploit this vulnerability by sending multiple device registration requests to Cisco SSM On-Prem. A successful exploit could allow the attacker to cause a DoS condition on an affected device.
{
"affected": [],
"aliases": [
"CVE-2022-20808"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-06T21:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incorrect handling of multiple simultaneous device registrations on Cisco SSM On-Prem. An attacker could exploit this vulnerability by sending multiple device registration requests to Cisco SSM On-Prem. A successful exploit could allow the attacker to cause a DoS condition on an affected device.",
"id": "GHSA-j3x4-2rgc-65g3",
"modified": "2022-07-15T00:00:19Z",
"published": "2022-07-07T00:00:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20808"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-privesc-tP6uNZOS"
}
],
"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-J45J-W7QV-7R59
Vulnerability from github – Published: 2022-05-24 16:44 – Updated: 2022-05-24 16:44An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with nested repetition operators.
{
"affected": [],
"aliases": [
"CVE-2019-11388"
],
"database_specific": {
"cwe_ids": [
"CWE-185",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-21T02:29:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with nested repetition operators.",
"id": "GHSA-j45j-w7qv-7r59",
"modified": "2022-05-24T16:44:03Z",
"published": "2022-05-24T16:44:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11388"
},
{
"type": "WEB",
"url": "https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1354"
},
{
"type": "WEB",
"url": "https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1372"
}
],
"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"
}
]
}
GHSA-J465-G235-7VW4
Vulnerability from github – Published: 2026-07-22 00:31 – Updated: 2026-07-22 00:31Vulnerability in the GoldenGate Stream Analytics product of Oracle GoldenGate (component: Security). The supported version that is affected is 26.1.0.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where GoldenGate Stream Analytics executes to compromise GoldenGate Stream Analytics. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of GoldenGate Stream Analytics. CVSS 3.1 Base Score 3.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
{
"affected": [],
"aliases": [
"CVE-2026-47022"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T22:17:07Z",
"severity": "LOW"
},
"details": "Vulnerability in the GoldenGate Stream Analytics product of Oracle GoldenGate (component: Security). The supported version that is affected is 26.1.0.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where GoldenGate Stream Analytics executes to compromise GoldenGate Stream Analytics. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of GoldenGate Stream Analytics. CVSS 3.1 Base Score 3.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).",
"id": "GHSA-j465-g235-7vw4",
"modified": "2026-07-22T00:31:15Z",
"published": "2026-07-22T00:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47022"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2026.html"
}
],
"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: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.