Detail CAPEC-495

CAPEC-495

UDP Fragmentation
2014-06-23
00h00 +00:00
Draft
2019-04-04
00h00 +00:00
CAPEC Mitre.org
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Kelola notifikasi

Deskripsi CAPEC

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.

Informasi CAPEC

Prasyarat

This type of an attack requires the attacker to be able to generate fragmented IP traffic containing crafted data.

Mitigasi

This attack may be mitigated by changing default cache sizes to be larger at the OS level. Additionally rules can be enforced to prune the cache with shorter timeouts for packet reassembly as the cache nears capacity.

Kelemahan Terkait

CWE-ID Nama Kelemahan

CWE-770

 Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

CWE-404

 Improper Resource Shutdown or Release
The product does not release or incorrectly releases a resource before it is made available for re-use.

Referensi

REF-424

Fragmentation Considered Vulnerable
Yossi Gilad, Amir Herzberg.
http://u.cs.biu.ac.il/~herzbea/security/12-03%20fragmentation.pdf

Pengajuan

Nama Organisasi Tanggal Tanggal rilis
CAPEC Content Team The MITRE Corporation 2014-06-23 +00:00

Modifikasi

Nama Organisasi Tanggal Komentar
CAPEC Content Team The MITRE Corporation 2019-04-04 +00:00 Updated Related_Weaknesses
Informasi yang disajikan di CVE Find berasal dari beberapa sumber referensi yang dipilih dengan cermat. Data CVE disediakan oleh MITRE Corporation dan National Vulnerability Database (NVD). Katalog Known Exploited Vulnerabilities (KEV) bersumber dari Cybersecurity and Infrastructure Security Agency (CISA), sementara skor EPSS berasal dari FIRST.org. Selain itu, data mengenai kelemahan perangkat lunak (CWE) dan pola serangan umum (CAPEC) dikelola oleh MITRE Corporation, dan informasi tentang konfigurasi perangkat keras dan perangkat lunak (CPE) disediakan oleh NVD.