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-68Q2-G7RV-MR2F
Vulnerability from github – Published: 2024-04-03 15:30 – Updated: 2024-08-01 15:31In the Linux kernel, the following vulnerability has been resolved:
lan966x: Fix crash when adding interface under a lag
There is a crash when adding one of the lan966x interfaces under a lag interface. The issue can be reproduced like this: ip link add name bond0 type bond miimon 100 mode balance-xor ip link set dev eth0 master bond0
The reason is because when adding a interface under the lag it would go through all the ports and try to figure out which other ports are under that lag interface. And the issue is that lan966x can have ports that are NULL pointer as they are not probed. So then iterating over these ports it would just crash as they are NULL pointers. The fix consists in actually checking for NULL pointers before accessing something from the ports. Like we do in other places.
{
"affected": [],
"aliases": [
"CVE-2024-26723"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-03T15:15:54Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlan966x: Fix crash when adding interface under a lag\n\nThere is a crash when adding one of the lan966x interfaces under a lag\ninterface. The issue can be reproduced like this:\nip link add name bond0 type bond miimon 100 mode balance-xor\nip link set dev eth0 master bond0\n\nThe reason is because when adding a interface under the lag it would go\nthrough all the ports and try to figure out which other ports are under\nthat lag interface. And the issue is that lan966x can have ports that are\nNULL pointer as they are not probed. So then iterating over these ports\nit would just crash as they are NULL pointers.\nThe fix consists in actually checking for NULL pointers before accessing\nsomething from the ports. Like we do in other places.",
"id": "GHSA-68q2-g7rv-mr2f",
"modified": "2024-08-01T15:31:36Z",
"published": "2024-04-03T15:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26723"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/15faa1f67ab405d47789d4702f587ec7df7ef03e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a492f01228b7d091dfe38974ef40dccf8f9f2f1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/48fae67d837488c87379f0c9f27df7391718477c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b9357489c46c7a43999964628db8b47d3a1f8672"
}
],
"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-68R5-9HPG-7QW9
Vulnerability from github – Published: 2026-07-24 21:46 – Updated: 2026-07-24 21:46The DSMLv2 SOAP gateway (opendj-dsml-servlet) in OpenIdentityPlatform OpenDJ through 5.1.1 dereferences attacker-supplied xsd:anyURI values server-side without a scheme allowlist, egress filtering, or a size cap, and is reachable without authentication by default. A remote unauthenticated attacker can submit a DSML add/modify request whose value is a URI to (1) perform server-side request forgery against internal services and the cloud metadata endpoint (SSRF), (2) read local files via file: URIs, and (3) exhaust memory through an unbounded response read (DoS). Fixed in 5.1.2: anyURI dereferencing is disabled by default; when enabled it is limited to an http/https allowlist, rejects loopback/link-local/private/reserved targets, refuses HTTP redirects, and caps the bytes read. The gateway also now requires container-managed authentication by default.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 5.1.1"
},
"package": {
"ecosystem": "Maven",
"name": "org.openidentityplatform.opendj:opendj-dsml-servlet"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.1.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-73",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-24T21:46:06Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "The DSMLv2 SOAP gateway (opendj-dsml-servlet) in OpenIdentityPlatform OpenDJ through 5.1.1 dereferences attacker-supplied xsd:anyURI values server-side without a scheme allowlist, egress filtering, or a size cap, and is reachable without authentication by default. A remote unauthenticated attacker can submit a DSML add/modify request whose value is a URI to (1) perform server-side request forgery against internal services and the cloud metadata endpoint (SSRF), (2) read local files via file: URIs, and (3) exhaust memory through an unbounded response read (DoS). Fixed in 5.1.2: anyURI dereferencing is disabled by default; when enabled it is limited to an http/https allowlist, rejects loopback/link-local/private/reserved targets, refuses HTTP redirects, and caps the bytes read. The gateway also now requires container-managed authentication by default.",
"id": "GHSA-68r5-9hpg-7qw9",
"modified": "2026-07-24T21:46:06Z",
"published": "2026-07-24T21:46:06Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-68r5-9hpg-7qw9"
},
{
"type": "WEB",
"url": "https://github.com/OpenIdentityPlatform/OpenDJ/commit/131e8576dcf3613f944c3e02527959bbf52370c3"
},
{
"type": "PACKAGE",
"url": "https://github.com/OpenIdentityPlatform/OpenDJ"
},
{
"type": "WEB",
"url": "https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
"type": "CVSS_V3"
}
],
"summary": "OpenDJ unauthenticated SSRF, local file read and unbounded-read DoS in the DSMLv2 gateway"
}
GHSA-68V5-4XCM-4C57
Vulnerability from github – Published: 2022-05-13 01:50 – Updated: 2024-03-21 03:33** DISPUTED ** Technicolor TC7200.20 devices allow remote attackers to cause a denial of service (networking outage) via a flood of random MAC addresses, as demonstrated by macof. NOTE: Technicolor denies that the described behavior is a vulnerability and states that Wi-Fi traffic is slowed or stopped only while the devices are exposed to a MAC flooding attack. This has been confirmed through testing against official up-to-date versions.
{
"affected": [],
"aliases": [
"CVE-2018-15852"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-25T21:29:00Z",
"severity": "MODERATE"
},
"details": "** DISPUTED ** Technicolor TC7200.20 devices allow remote attackers to cause a denial of service (networking outage) via a flood of random MAC addresses, as demonstrated by macof. NOTE: Technicolor denies that the described behavior is a vulnerability and states that Wi-Fi traffic is slowed or stopped only while the devices are exposed to a MAC flooding attack. This has been confirmed through testing against official up-to-date versions.",
"id": "GHSA-68v5-4xcm-4c57",
"modified": "2024-03-21T03:33:31Z",
"published": "2022-05-13T01:50:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15852"
},
{
"type": "WEB",
"url": "https://bkd00r.wordpress.com/2018/08/24/cve-2018-15852-exploit-title-cable-modem-technicolor-tc7200-20-wifi-buffer-overflow"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-68XF-4W7R-P3V5
Vulnerability from github – Published: 2022-12-13 18:30 – Updated: 2022-12-15 15:32In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242703217
{
"affected": [],
"aliases": [
"CVE-2022-20488"
],
"database_specific": {
"cwe_ids": [
"CWE-1284",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-13T16:15:00Z",
"severity": "HIGH"
},
"details": "In NotificationChannel of NotificationChannel.java, there is a possible failure to persist permissions settings due to resource exhaustion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242703217",
"id": "GHSA-68xf-4w7r-p3v5",
"modified": "2022-12-15T15:32:12Z",
"published": "2022-12-13T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20488"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2022-12-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-693P-QR5P-6W3V
Vulnerability from github – Published: 2022-05-18 00:00 – Updated: 2022-05-27 00:00NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (nvidia.ko), where uncontrolled resource consumption can be triggered by an unprivileged regular user, which may lead to denial of service.
{
"affected": [],
"aliases": [
"CVE-2022-28191"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-17T20:15:00Z",
"severity": "MODERATE"
},
"details": "NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (nvidia.ko), where uncontrolled resource consumption can be triggered by an unprivileged regular user, which may lead to denial of service.",
"id": "GHSA-693p-qr5p-6w3v",
"modified": "2022-05-27T00:00:51Z",
"published": "2022-05-18T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28191"
},
{
"type": "WEB",
"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5353"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-69CP-J43F-RQJ7
Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31In libming 0.4.8, a memory exhaustion vulnerability was found in the function parseSWF_ACTIONRECORD in util/parser.c, which allows remote attackers to cause a denial of service via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2018-7876"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-08T18:29:00Z",
"severity": "MODERATE"
},
"details": "In libming 0.4.8, a memory exhaustion vulnerability was found in the function parseSWF_ACTIONRECORD in util/parser.c, which allows remote attackers to cause a denial of service via a crafted file.",
"id": "GHSA-69cp-j43f-rqj7",
"modified": "2022-05-13T01:31:09Z",
"published": "2022-05-13T01:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7876"
},
{
"type": "WEB",
"url": "https://github.com/libming/libming/issues/109"
},
{
"type": "WEB",
"url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892260"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/05/msg00017.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/47KZ5RYWQMBN5DVDITBVRDNDCSFNBJ3V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CQNIJH5EQV2D6KEFGY2467ZS4I7TZLXP"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LBFCINUX3XXAPPH77OH6NKACBPFBQXXW"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-69FX-RR2Q-VW9X
Vulnerability from github – Published: 2023-06-13 21:30 – Updated: 2024-04-04 04:48A denial-of-service vulnerability exists in Rockwell Automation FactoryTalk Transaction Manager. This vulnerability can be exploited by sending a modified packet to port 400. If exploited, the application could potentially crash or experience a high CPU or memory usage condition, causing intermittent application functionality issues. The application would need to be restarted to recover from the DoS.
{
"affected": [],
"aliases": [
"CVE-2023-2778"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-13T21:15:10Z",
"severity": "HIGH"
},
"details": "\nA denial-of-service vulnerability exists in Rockwell Automation FactoryTalk Transaction Manager. This vulnerability can be exploited by sending a modified packet to port 400. If exploited, the application could potentially crash or experience a high CPU or memory usage condition, causing intermittent application functionality issues. The application would need to be restarted to recover from the DoS.",
"id": "GHSA-69fx-rr2q-vw9x",
"modified": "2024-04-04T04:48:05Z",
"published": "2023-06-13T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2778"
},
{
"type": "WEB",
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1139744"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-69GQ-36MP-5W52
Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2022-07-13 00:00Running security scans against the SAN switch can cause config and secnotify processes within the firmware before Brocade Fabric OS v9.0.0, v8.2.2d and v8.2.1e to consume all memory leading to denial of service impacts possibly including a switch panic.
{
"affected": [],
"aliases": [
"CVE-2020-15383"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-09T15:15:00Z",
"severity": "HIGH"
},
"details": "Running security scans against the SAN switch can cause config and secnotify processes within the firmware before Brocade Fabric OS v9.0.0, v8.2.2d and v8.2.1e to consume all memory leading to denial of service impacts possibly including a switch panic.",
"id": "GHSA-69gq-36mp-5w52",
"modified": "2022-07-13T00:00:43Z",
"published": "2022-05-24T19:04:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15383"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210819-0002"
},
{
"type": "WEB",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1496"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6C2Q-W54R-H6FV
Vulnerability from github – Published: 2024-02-13 15:31 – Updated: 2024-04-18 21:30Uncontrolled Resource Consumption vulnerability in Honeywell Niagara Framework on Windows, Linux, QNX allows Content Spoofing.This issue affects Niagara Framework: before Niagara AX 3.8.1, before Niagara 4.1.
{
"affected": [],
"aliases": [
"CVE-2024-1309"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-13T14:15:46Z",
"severity": "MODERATE"
},
"details": "Uncontrolled Resource Consumption vulnerability in Honeywell Niagara Framework on Windows, Linux, QNX allows Content Spoofing.This issue affects Niagara Framework: before Niagara AX 3.8.1, before Niagara 4.1.\n\n",
"id": "GHSA-6c2q-w54r-h6fv",
"modified": "2024-04-18T21:30:31Z",
"published": "2024-02-13T15:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1309"
},
{
"type": "WEB",
"url": "https://process.honeywell.com"
},
{
"type": "WEB",
"url": "https://www.honeywell.com/us/en/product-security"
},
{
"type": "WEB",
"url": "https://www.kb.cert.org/vuls/id/417980"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-6C7F-V79H-5RVH
Vulnerability from github – Published: 2023-01-13 00:30 – Updated: 2023-01-24 21:30An Uncontrolled Resource Consumption vulnerability in TCP processing on the Routing Engine (RE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to send crafted TCP packets destined to the device, resulting in an MBUF leak that ultimately leads to a Denial of Service (DoS). The system does not recover automatically and must be manually restarted to restore service. This issue occurs when crafted TCP packets are sent directly to a configured IPv4 or IPv6 interface on the device. Transit traffic will not trigger this issue. MBUF usage can be monitored through the use of the 'show system buffers' command. For example: user@junos> show system buffers | refresh 5 4054/566/4620 mbufs in use (current/cache/total) ... 4089/531/4620 mbufs in use (current/cache/total) ... 4151/589/4740 mbufs in use (current/cache/total) ... 4213/527/4740 mbufs in use (current/cache/total) This issue affects Juniper Networks Junos OS: 12.3 version 12.3R12-S19 and later versions; 15.1 version 15.1R7-S10 and later versions; 17.3 version 17.3R3-S12 and later versions; 18.4 version 18.4R3-S9 and later versions; 19.1 version 19.1R3-S7 and later versions; 19.2 version 19.2R3-S3 and later versions; 19.3 version 19.3R2-S7, 19.3R3-S3 and later versions prior to 19.3R3-S7; 19.4 version 19.4R2-S7, 19.4R3-S5 and later versions prior to 19.4R3-S10; 20.1 version 20.1R3-S1 and later versions; 20.2 version 20.2R3-S2 and later versions prior to 20.2R3-S6; 20.3 version 20.3R3-S1 and later versions prior to 20.3R3-S6; 20.4 version 20.4R2-S2, 20.4R3 and later versions prior to 20.4R3-S5; 21.1 version 21.1R2 and later versions prior to 21.1R3-S4; 21.2 version 21.2R1-S1, 21.2R2 and later versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2; 22.3 versions prior to 22.3R1-S1, 22.3R2.
{
"affected": [],
"aliases": [
"CVE-2023-22396"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-13T00:15:00Z",
"severity": "HIGH"
},
"details": "An Uncontrolled Resource Consumption vulnerability in TCP processing on the Routing Engine (RE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to send crafted TCP packets destined to the device, resulting in an MBUF leak that ultimately leads to a Denial of Service (DoS). The system does not recover automatically and must be manually restarted to restore service. This issue occurs when crafted TCP packets are sent directly to a configured IPv4 or IPv6 interface on the device. Transit traffic will not trigger this issue. MBUF usage can be monitored through the use of the \u0027show system buffers\u0027 command. For example: user@junos\u003e show system buffers | refresh 5 4054/566/4620 mbufs in use (current/cache/total) ... 4089/531/4620 mbufs in use (current/cache/total) ... 4151/589/4740 mbufs in use (current/cache/total) ... 4213/527/4740 mbufs in use (current/cache/total) This issue affects Juniper Networks Junos OS: 12.3 version 12.3R12-S19 and later versions; 15.1 version 15.1R7-S10 and later versions; 17.3 version 17.3R3-S12 and later versions; 18.4 version 18.4R3-S9 and later versions; 19.1 version 19.1R3-S7 and later versions; 19.2 version 19.2R3-S3 and later versions; 19.3 version 19.3R2-S7, 19.3R3-S3 and later versions prior to 19.3R3-S7; 19.4 version 19.4R2-S7, 19.4R3-S5 and later versions prior to 19.4R3-S10; 20.1 version 20.1R3-S1 and later versions; 20.2 version 20.2R3-S2 and later versions prior to 20.2R3-S6; 20.3 version 20.3R3-S1 and later versions prior to 20.3R3-S6; 20.4 version 20.4R2-S2, 20.4R3 and later versions prior to 20.4R3-S5; 21.1 version 21.1R2 and later versions prior to 21.1R3-S4; 21.2 version 21.2R1-S1, 21.2R2 and later versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2; 22.3 versions prior to 22.3R1-S1, 22.3R2.",
"id": "GHSA-6c7f-v79h-5rvh",
"modified": "2023-01-24T21:30:37Z",
"published": "2023-01-13T00:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22396"
},
{
"type": "WEB",
"url": "https://kb.juniper.net/JSA70192"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.