CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5424 vulnerabilities reference this CWE, most recent first.
GHSA-QG86-F892-M4HJ
Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-21 16:37In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinite loop, leading to excessive resource consumption and a complete denial of service (DoS) for all users. The vulnerability is unauthenticated, meaning no user login or interaction is required for an attacker to exploit this issue.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "fschat"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.2.36"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-10907"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2025-03-21T16:37:30Z",
"nvd_published_at": "2025-03-20T10:15:21Z",
"severity": "HIGH"
},
"details": "In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinite loop, leading to excessive resource consumption and a complete denial of service (DoS) for all users. The vulnerability is unauthenticated, meaning no user login or interaction is required for an attacker to exploit this issue.",
"id": "GHSA-qg86-f892-m4hj",
"modified": "2025-03-21T16:37:30Z",
"published": "2025-03-20T12:32:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10907"
},
{
"type": "PACKAGE",
"url": "https://github.com/lm-sys/FastChat"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/bf3ca81d-3508-4455-95d9-0b653e46d6e4"
}
],
"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": "FastChat Uncontrolled Resource Consumption vulnerability"
}
GHSA-QGC6-WCR8-WWJX
Vulnerability from github – Published: 2025-07-15 21:31 – Updated: 2025-07-15 21:31Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2025-50096"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-15T20:15:45Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-qgc6-wcr8-wwjx",
"modified": "2025-07-15T21:31:42Z",
"published": "2025-07-15T21:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50096"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2025.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QGC7-MGM3-Q253
Vulnerability from github – Published: 2023-02-17 13:59 – Updated: 2024-05-20 21:46An attacker can craft a malformed TIFF image which will consume a significant amount of memory when passed to DecodeConfig. This could lead to a denial of service.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "golang.org/x/image"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-41727"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-17T13:59:44Z",
"nvd_published_at": "2023-02-28T18:15:00Z",
"severity": "MODERATE"
},
"details": "An attacker can craft a malformed TIFF image which will consume a significant amount of memory when passed to DecodeConfig. This could lead to a denial of service.",
"id": "GHSA-qgc7-mgm3-q253",
"modified": "2024-05-20T21:46:58Z",
"published": "2023-02-17T13:59:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41727"
},
{
"type": "WEB",
"url": "https://go.dev/cl/468195"
},
{
"type": "WEB",
"url": "https://go.dev/issue/58003"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/golang-announce/c/ag-FiyjlD5o"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KO54NBDUJXKAZNGCFOEYL2LKK2RQP6K6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWH6Q7NVM4MV3GWFEU4PA67AWZHVFJQ2"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XZTEP6JYILRBNDTNWTEQ5D4QUUVQBESK"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2023-1572"
}
],
"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": "Uncontrolled Resource Consumption in golang.org/x/image"
}
GHSA-QGGH-6FCH-VXCC
Vulnerability from github – Published: 2022-12-13 18:30 – Updated: 2022-12-15 18:30In 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-242703202
{
"affected": [],
"aliases": [
"CVE-2022-20487"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"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-242703202",
"id": "GHSA-qggh-6fch-vxcc",
"modified": "2022-12-15T18:30:25Z",
"published": "2022-12-13T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20487"
},
{
"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-QGHW-HWM7-FW74
Vulnerability from github – Published: 2024-05-08 09:30 – Updated: 2024-05-08 09:30The etcd package distributed with the Red Hat OpenStack platform has an incomplete fix for CVE-2022-41723. This issue occurs because the etcd package in the Red Hat OpenStack platform is using http://golang.org/x/net/http2 instead of the one provided by Red Hat Enterprise Linux versions, meaning it should be updated at compile time instead.
{
"affected": [],
"aliases": [
"CVE-2024-4436"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-08T09:15:09Z",
"severity": "HIGH"
},
"details": "The etcd package distributed with the Red Hat OpenStack platform has an incomplete fix for CVE-2022-41723. This issue occurs because the etcd package in the Red Hat OpenStack platform is using http://golang.org/x/net/http2 instead of the one provided by Red Hat Enterprise Linux versions, meaning it should be updated at compile time instead.",
"id": "GHSA-qghw-hwm7-fw74",
"modified": "2024-05-08T09:30:50Z",
"published": "2024-05-08T09:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4436"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-4436"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2279357"
}
],
"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-QGPW-3WCJ-F37P
Vulnerability from github – Published: 2024-12-13 06:30 – Updated: 2025-10-01 18:30Uncontrolled Resource Consumption vulnerability in PlexTrac allows WebSocket DoS.This issue affects PlexTrac: from 1.61.3 before 2.8.1.
{
"affected": [],
"aliases": [
"CVE-2024-11835"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-13T06:15:25Z",
"severity": "HIGH"
},
"details": "Uncontrolled Resource Consumption vulnerability in PlexTrac allows WebSocket DoS.This issue affects PlexTrac: from 1.61.3 before 2.8.1.",
"id": "GHSA-qgpw-3wcj-f37p",
"modified": "2025-10-01T18:30:27Z",
"published": "2024-12-13T06:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-11835"
},
{
"type": "WEB",
"url": "https://docs.plextrac.com/plextrac-documentation/master/security-advisories#release-2.11.0"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:H/SI:H/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:Red",
"type": "CVSS_V4"
}
]
}
GHSA-QH26-GM6X-4QPG
Vulnerability from github – Published: 2026-06-30 21:31 – Updated: 2026-06-30 21:31IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.
{
"affected": [],
"aliases": [
"CVE-2026-9002"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T20:17:32Z",
"severity": "MODERATE"
},
"details": "IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.",
"id": "GHSA-qh26-gm6x-4qpg",
"modified": "2026-06-30T21:31:44Z",
"published": "2026-06-30T21:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9002"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7278346"
}
],
"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:H",
"type": "CVSS_V3"
}
]
}
GHSA-QH4Q-FWF8-QQRW
Vulnerability from github – Published: 2022-05-17 05:48 – Updated: 2026-05-29 20:48ZServer in Zope 2.10.x before 2.10.12 and 2.11.x before 2.11.7 allows remote attackers to cause a denial of service (crash of worker threads) via vectors that trigger uncaught exceptions.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "Zope"
},
"ranges": [
{
"events": [
{
"introduced": "2.10.0"
},
{
"fixed": "2.10.12"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "Zope"
},
"ranges": [
{
"events": [
{
"introduced": "2.11.0"
},
{
"fixed": "2.11.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2010-3198"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-02-08T15:40:04Z",
"nvd_published_at": "2010-09-08T20:00:00Z",
"severity": "HIGH"
},
"details": "ZServer in Zope 2.10.x before 2.10.12 and 2.11.x before 2.11.7 allows remote attackers to cause a denial of service (crash of worker threads) via vectors that trigger uncaught exceptions.",
"id": "GHSA-qh4q-fwf8-qqrw",
"modified": "2026-05-29T20:48:32Z",
"published": "2022-05-17T05:48:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-3198"
},
{
"type": "WEB",
"url": "https://github.com/zopefoundation/Zope/commit/0f2f56f63e4a4d695ee670e02b317e900550dbac"
},
{
"type": "WEB",
"url": "https://github.com/zopefoundation/Zope/commit/e03a5f036d42ed2426886c9035fe018eeec65de4"
},
{
"type": "WEB",
"url": "https://bugs.launchpad.net/zope2/+bug/627988"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/zope/PYSEC-2010-32.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/zope/PYSEC-2010-33.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/zopefoundation/Zope"
},
{
"type": "WEB",
"url": "https://mail.zope.org/pipermail/zope-announce/2010-September/002247.html"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20200229173503/http://www.securityfocus.com/bid/42939"
},
{
"type": "WEB",
"url": "http://www.zope.org/Products/Zope/2.10.12/CHANGES.txt"
},
{
"type": "WEB",
"url": "http://www.zope.org/Products/Zope/2.11.7/CHANGES.txt"
}
],
"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": "Zope Denial of Service (DoS) vulnerability in ZServer"
}
GHSA-QH4W-7PW3-P4RP
Vulnerability from github – Published: 2020-04-29 15:34 – Updated: 2023-08-25 21:29The Moped::BSON::ObjecId.legal? method in mongodb/bson-ruby before 3.0.4 as used in rubygem-moped allows remote attackers to cause a denial of service (worker resource consumption) via a crafted string. NOTE: This issue is due to an incomplete fix to CVE-2015-4410.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "bson"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2015-4411"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2020-04-23T20:14:17Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "The `Moped::BSON::ObjecId.legal?` method in `mongodb/bson-ruby` before 3.0.4 as used in rubygem-moped allows remote attackers to cause a denial of service (worker resource consumption) via a crafted string. NOTE: This issue is due to an incomplete fix to CVE-2015-4410.",
"id": "GHSA-qh4w-7pw3-p4rp",
"modified": "2023-08-25T21:29:46Z",
"published": "2020-04-29T15:34:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-4411"
},
{
"type": "WEB",
"url": "https://github.com/mongodb/bson-ruby/commit/976da329ff03ecdfca3030eb6efe3c85e6db9999"
},
{
"type": "WEB",
"url": "https://github.com/mongodb/bson-ruby/commit/fef6f75413511d653c76bf924a932374a183a24f#diff-8c8558c185bbb548ccb5a6d6ac4bfee5R191"
},
{
"type": "WEB",
"url": "https://github.com/mongoid/moped/commit/dd5a7c14b5d2e466f7875d079af71ad19774609b#diff-3b93602f64c2fe46d38efd9f73ef5358R24"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1229706"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-qh4w-7pw3-p4rp"
},
{
"type": "PACKAGE",
"url": "https://github.com/mongodb/bson-ruby"
},
{
"type": "WEB",
"url": "https://github.com/mongodb/bson-ruby/compare/7446d7c6764dfda8dc4480ce16d5c023e74be5ca...28f34978a85b689a4480b4d343389bf4886522e7"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/bson/CVE-2015-4411.yml"
},
{
"type": "WEB",
"url": "https://homakov.blogspot.ru/2012/05/saferweb-injects-in-various-ruby.html"
},
{
"type": "WEB",
"url": "https://sakurity.com/blog/2015/06/04/mongo_ruby_regexp.html"
},
{
"type": "WEB",
"url": "https://seclists.org/oss-sec/2015/q2/653"
},
{
"type": "WEB",
"url": "https://security-tracker.debian.org/tracker/CVE-2015-4411"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20200228085849/http://www.securityfocus.com/bid/75045"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161964.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161987.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2015/06/06/3"
}
],
"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": "BSON rubygem contains potential denial of service"
}
GHSA-QH6G-QWXC-43VG
Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31IBM WebSphere Application Server Admin Console 7.5, 8.0, 8.5, and 9.0 is vulnerable to a potential denial of service, caused by improper parameter parsing. A remote attacker could exploit this to consume all available CPU resources. IBM X-Force ID: 157380.
{
"affected": [],
"aliases": [
"CVE-2019-4080"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-02T14:29:00Z",
"severity": "MODERATE"
},
"details": "IBM WebSphere Application Server Admin Console 7.5, 8.0, 8.5, and 9.0 is vulnerable to a potential denial of service, caused by improper parameter parsing. A remote attacker could exploit this to consume all available CPU resources. IBM X-Force ID: 157380.",
"id": "GHSA-qh6g-qwxc-43vg",
"modified": "2022-05-13T01:31:13Z",
"published": "2022-05-13T01:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-4080"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/157380"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/docview.wss?uid=ibm10875692"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/107683"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.