CWE-404
Allowed-with-ReviewImproper Resource Shutdown or Release
Abstraction: Class · Status: Draft
The product does not release or incorrectly releases a resource before it is made available for re-use.
1219 vulnerabilities reference this CWE, most recent first.
GHSA-PGH5-2R5J-H8RF
Vulnerability from github – Published: 2025-08-14 18:31 – Updated: 2025-08-14 18:31A vulnerability in the TLS 1.3 implementation for a specific cipher for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software for Cisco Firepower 3100 and 4200 Series devices could allow an authenticated, remote attacker to consume resources that are associated with incoming TLS 1.3 connections, which eventually could cause the device to stop accepting any new SSL/TLS or VPN requests.
This vulnerability is due to the implementation of the TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. An attacker could exploit this vulnerability by sending a large number of TLS 1.3 connections with the specific TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. A successful exploit could allow the attacker to cause a denial of service (DoS) condition where no new incoming encrypted connections are accepted. The device must be reloaded to clear this condition. Note: These incoming TLS 1.3 connections include both data traffic and user-management traffic. After the device is in the vulnerable state, no new encrypted connections can be accepted.
{
"affected": [],
"aliases": [
"CVE-2025-20127"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-14T17:15:33Z",
"severity": "HIGH"
},
"details": "A vulnerability in the TLS 1.3 implementation for a specific cipher for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software for Cisco Firepower 3100 and 4200 Series devices could allow an authenticated, remote attacker to consume resources that are associated with incoming TLS 1.3 connections, which eventually could cause the device to stop accepting any new SSL/TLS or VPN requests.\n\nThis vulnerability is due to the implementation of the TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. An attacker could exploit this vulnerability by sending a large number of TLS 1.3 connections with the specific TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. A successful exploit could allow the attacker to cause a denial of service (DoS) condition where no new incoming encrypted connections are accepted. The device must be reloaded to clear this condition.\nNote: These incoming TLS 1.3 connections include both data traffic and user-management traffic. After the device is in the vulnerable state, no new encrypted connections can be accepted.",
"id": "GHSA-pgh5-2r5j-h8rf",
"modified": "2025-08-14T18:31:28Z",
"published": "2025-08-14T18:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20127"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3100_4200_tlsdos-2yNSCd54"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PH9C-G27H-RF9V
Vulnerability from github – Published: 2022-05-13 01:53 – Updated: 2022-05-13 01:53An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 10, Windows 10 Servers.
{
"affected": [],
"aliases": [
"CVE-2018-8233"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-14T12:29:00Z",
"severity": "HIGH"
},
"details": "An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka \"Win32k Elevation of Privilege Vulnerability.\" This affects Windows 10, Windows 10 Servers.",
"id": "GHSA-ph9c-g27h-rf9v",
"modified": "2022-05-13T01:53:36Z",
"published": "2022-05-13T01:53:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8233"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8233"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104383"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041093"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PHR5-VVRC-H6FP
Vulnerability from github – Published: 2022-12-25 21:30 – Updated: 2023-01-04 21:30A vulnerability was found in styler_praat_scripts. It has been classified as problematic. Affected is an unknown function of the file file_segmenter.praat of the component Slash Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The name of the patch is 0cad44aa4a3eb0ecdba071c10eaff16023d8b35f. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216780.
{
"affected": [],
"aliases": [
"CVE-2021-4280"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-25T20:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in styler_praat_scripts. It has been classified as problematic. Affected is an unknown function of the file file_segmenter.praat of the component Slash Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The name of the patch is 0cad44aa4a3eb0ecdba071c10eaff16023d8b35f. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216780.",
"id": "GHSA-phr5-vvrc-h6fp",
"modified": "2023-01-04T21:30:17Z",
"published": "2022-12-25T21:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4280"
},
{
"type": "WEB",
"url": "https://github.com/stylerw/styler_praat_scripts/commit/0cad44aa4a3eb0ecdba071c10eaff16023d8b35f"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.216780"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.216780"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PHRX-VRCG-3V5J
Vulnerability from github – Published: 2022-05-13 01:53 – Updated: 2022-05-13 01:53An elevation of privilege vulnerability exists when DirectX improperly handles objects in memory, aka "DirectX Elevation of Privilege Vulnerability." This affects Windows 10 Servers, Windows 10, Windows Server 2019. This CVE ID is unique from CVE-2018-8485, CVE-2018-8561.
{
"affected": [],
"aliases": [
"CVE-2018-8554"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-14T01:29:00Z",
"severity": "HIGH"
},
"details": "An elevation of privilege vulnerability exists when DirectX improperly handles objects in memory, aka \"DirectX Elevation of Privilege Vulnerability.\" This affects Windows 10 Servers, Windows 10, Windows Server 2019. This CVE ID is unique from CVE-2018-8485, CVE-2018-8561.",
"id": "GHSA-phrx-vrcg-3v5j",
"modified": "2022-05-13T01:53:46Z",
"published": "2022-05-13T01:53:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8554"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8554"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105811"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1042135"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PHX5-P62Q-PPQC
Vulnerability from github – Published: 2022-10-19 12:00 – Updated: 2022-10-20 19:00A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
{
"affected": [],
"aliases": [
"CVE-2022-3594"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-18T20:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.",
"id": "GHSA-phx5-p62q-ppqc",
"modified": "2022-10-20T19:00:30Z",
"published": "2022-10-19T12:00:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3594"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=93e2be344a7db169b7119de21ac1bf253b8c6907"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.211363"
}
],
"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-PJRJ-H4FG-6GM4
Vulnerability from github – Published: 2023-12-05 23:42 – Updated: 2023-12-05 23:42Impact
The tokio-boring library in version 4.0.0 is affected by a memory leak issue that can lead to excessive resource consumption and potential DoS by resource exhaustion. The set_ex_data function used by the library did not deallocate memory used by pre-existing data in memory each time after completing a TLS connection causing the program to consume more resources with each new connection.
Patches
The issue is fixed in version 4.1.0 of tokio-boring.
References
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "tokio-boring"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.1.0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.0"
]
}
],
"aliases": [
"CVE-2023-6180"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-401",
"CWE-404"
],
"github_reviewed": true,
"github_reviewed_at": "2023-12-05T23:42:49Z",
"nvd_published_at": "2023-12-05T15:15:08Z",
"severity": "MODERATE"
},
"details": "### Impact\nThe tokio-boring library in version 4.0.0 is affected by a memory leak issue that can lead to excessive resource consumption and potential DoS by resource exhaustion. The `set_ex_data` function used by the library did not deallocate memory used by pre-existing data in memory each time after completing a TLS connection causing the program to consume more resources with each new connection.\n\n### Patches\nThe issue is fixed in version 4.1.0 of tokio-boring.\n\n### References\n[CVE-2023-6180 at cve.org](https://www.cve.org/CVERecord?id=CVE-2023-6180)\n",
"id": "GHSA-pjrj-h4fg-6gm4",
"modified": "2023-12-05T23:42:49Z",
"published": "2023-12-05T23:42:49Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/cloudflare/boring/security/advisories/GHSA-pjrj-h4fg-6gm4"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6180"
},
{
"type": "WEB",
"url": "https://github.com/cloudflare/boring/commit/a32783374f2682e6949fdb713910b1b9f103d3ed"
},
{
"type": "PACKAGE",
"url": "https://github.com/cloudflare/boring"
}
],
"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": "tokio-boring vulnerable to resource exhaustion via memory leak"
}
GHSA-PJX4-F26P-JC98
Vulnerability from github – Published: 2024-02-03 00:31 – Updated: 2024-02-03 00:31A vulnerability classified as critical was found in iTop VPN up to 4.0.0.1. Affected by this vulnerability is an unknown functionality in the library ITopVpnCallbackProcess.sys of the component IOCTL Handler. The manipulation leads to denial of service. The attack needs to be approached locally. The identifier VDB-252685 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2024-1195"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-02T22:15:25Z",
"severity": "MODERATE"
},
"details": "A vulnerability classified as critical was found in iTop VPN up to 4.0.0.1. Affected by this vulnerability is an unknown functionality in the library ITopVpnCallbackProcess.sys of the component IOCTL Handler. The manipulation leads to denial of service. The attack needs to be approached locally. The identifier VDB-252685 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-pjx4-f26p-jc98",
"modified": "2024-02-03T00:31:34Z",
"published": "2024-02-03T00:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1195"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.252685"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.252685"
},
{
"type": "WEB",
"url": "https://www.youtube.com/watch?v=JdQMINPVJd8"
}
],
"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-PJXF-JXMW-2Q29
Vulnerability from github – Published: 2023-01-26 21:30 – Updated: 2025-11-04 00:30GNW dissector crash in Wireshark 4.0.0 to 4.0.2 and 3.6.0 to 3.6.10 and allows denial of service via packet injection or crafted capture file
{
"affected": [],
"aliases": [
"CVE-2023-0416"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-26T21:18:00Z",
"severity": "MODERATE"
},
"details": "GNW dissector crash in Wireshark 4.0.0 to 4.0.2 and 3.6.0 to 3.6.10 and allows denial of service via packet injection or crafted capture file",
"id": "GHSA-pjxf-jxmw-2q29",
"modified": "2025-11-04T00:30:35Z",
"published": "2023-01-26T21:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0416"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0416.json"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/issues/18779"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2023-04.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PM5G-66XR-995Q
Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.
{
"affected": [],
"aliases": [
"CVE-2018-8836"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-03T13:29:00Z",
"severity": "MODERATE"
},
"details": "Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.",
"id": "GHSA-pm5g-66xr-995q",
"modified": "2022-05-13T01:31:48Z",
"published": "2022-05-13T01:31:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8836"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01"
},
{
"type": "WEB",
"url": "https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzE"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103726"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-PM6Q-RR37-384J
Vulnerability from github – Published: 2023-03-27 00:30 – Updated: 2023-03-30 18:30A vulnerability has been found in IObit Malware Fighter 9.4.0.776 and classified as problematic. Affected by this vulnerability is the function 0x8001E000/0x8001E004/0x8001E018/0x8001E01C/0x8001E024/0x8001E040 in the library ImfHpRegFilter.sys of the component IOCTL Handler. The manipulation leads to denial of service. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-224023.
{
"affected": [],
"aliases": [
"CVE-2023-1643"
],
"database_specific": {
"cwe_ids": [
"CWE-404"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-26T22:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in IObit Malware Fighter 9.4.0.776 and classified as problematic. Affected by this vulnerability is the function 0x8001E000/0x8001E004/0x8001E018/0x8001E01C/0x8001E024/0x8001E040 in the library ImfHpRegFilter.sys of the component IOCTL Handler. The manipulation leads to denial of service. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-224023.",
"id": "GHSA-pm6q-rr37-384j",
"modified": "2023-03-30T18:30:30Z",
"published": "2023-03-27T00:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1643"
},
{
"type": "WEB",
"url": "https://drive.google.com/file/d/1dHdltwenfMdwAPeb3JPex0fHxfK_iLYh/view"
},
{
"type": "WEB",
"url": "https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-1643"
},
{
"type": "WEB",
"url": "https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/unassigned37"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.224023"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.224023"
}
],
"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"
}
]
}
Mitigation MIT-3
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.
Mitigation
It is good practice to be responsible for freeing all resources you allocate and to be consistent with how and where you free memory in a function. If you allocate memory that you intend to free upon completion of the function, you must be sure to free the memory at all exit points for that function including error conditions.
Mitigation
Memory should be allocated/freed using matching functions such as malloc/free, new/delete, and new[]/delete[].
Mitigation
When releasing a complex object or structure, ensure that you properly dispose of all of its member components, not just the object itself.
CAPEC-125: Flooding
An adversary consumes the resources of a target by rapidly engaging in a large number of interactions with the target. This type of attack generally exposes a weakness in rate limiting or flow. When successful this attack prevents legitimate users from accessing the service and can cause the target to crash. This attack differs from resource depletion through leaks or allocations in that the latter attacks do not rely on the volume of requests made to the target but instead focus on manipulation of the target's operations. The key factor in a flooding attack is the number of requests the adversary can make in a given period of time. The greater this number, the more likely an attack is to succeed against a given target.
CAPEC-130: Excessive Allocation
An adversary causes the target to allocate excessive resources to servicing the attackers' request, thereby reducing the resources available for legitimate services and degrading or denying services. Usually, this attack focuses on memory allocation, but any finite resource on the target could be the attacked, including bandwidth, processing cycles, or other resources. This attack does not attempt to force this allocation through a large number of requests (that would be Resource Depletion through Flooding) but instead uses one or a small number of requests that are carefully formatted to force the target to allocate excessive resources to service this request(s). Often this attack takes advantage of a bug in the target to cause the target to allocate resources vastly beyond what would be needed for a normal request.
CAPEC-131: Resource Leak Exposure
An adversary utilizes a resource leak on the target to deplete the quantity of the resource available to service legitimate requests.
CAPEC-494: TCP Fragmentation
An adversary may execute a TCP Fragmentation attack against a target with the intention of avoiding filtering rules of network controls, by attempting to fragment the TCP packet such that the headers flag field is pushed into the second fragment which typically is not filtered.
CAPEC-495: UDP Fragmentation
An attacker may execute a UDP Fragmentation attack against a target server in an attempt to consume resources such as bandwidth and CPU. IP fragmentation occurs when an IP datagram is larger than the MTU of the route the datagram has to traverse. Typically the attacker will use large UDP packets over 1500 bytes of data which forces fragmentation as ethernet MTU is 1500 bytes. This attack is a variation on a typical UDP flood but it enables more network bandwidth to be consumed with fewer packets. Additionally it has the potential to consume server CPU resources and fill memory buffers associated with the processing and reassembling of fragmented packets.
CAPEC-496: ICMP Fragmentation
An attacker may execute a ICMP Fragmentation attack against a target with the intention of consuming resources or causing a crash. The attacker crafts a large number of identical fragmented IP packets containing a portion of a fragmented ICMP message. The attacker these sends these messages to a target host which causes the host to become non-responsive. Another vector may be sending a fragmented ICMP message to a target host with incorrect sizes in the header which causes the host to hang.
CAPEC-666: BlueSmacking
An adversary uses Bluetooth flooding to transfer large packets to Bluetooth enabled devices over the L2CAP protocol with the goal of creating a DoS. This attack must be carried out within close proximity to a Bluetooth enabled device.