Weakness (CWE)
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.
How to prevent it (8 mitigations)
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Requirements
Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
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Architecture and Design
Limit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.
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Architecture and Design
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, and it will help the administrator to identify who is committing the abuse. 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.
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Architecture and Design
Mitigation of resource exhaustion attacks requires that the target system either:
- recognizes the attack and denies that user further access for a given amount of time, typically by using increasing time delays
- uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
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 can be difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply requires more resources on the part of the attacker.
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Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
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Architecture and Design, Implementation
If the program must fail, ensure that it fails gracefully (fails closed). There may be a temptation to simply let the program fail poorly in cases such as low memory conditions, but an attacker may be able to assert control before the software has fully exited. Alternately, an uncontrolled failure could cause cascading problems with other downstream components; for example, the program could send a signal to a downstream process so the process immediately knows that a problem has occurred and has a better chance of recovery.
Ensure that all failures in resource allocation place the system into a safe posture.
Source: MITRE CWE-770
2,488 results · Feed
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Medium 6.5
vLLM vulnerable to Denial of Service by abusing xgrammar cache
### Impact This report is to highlight a vulnerability in XGrammar, a library used by the structured output feature in vLLM. The XGrammar advisory is here: https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-389x-67px-mjg3 The [xgrammar](https://xgram…
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Medium 5.1
Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through Burst of Crafted Packets
A denial-of-service (DoS) vulnerability in Palo Alto Networks Prisma® SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to disrupt the packet processing capabilities of the device by sending a burst of …
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Medium 4.3
IBM QRadar WinCollect Agent denial of service
IBM QRadar WinCollect Agent 10.0 through 10.1.13 could allow a remote attacker to cause a denial of service by interrupting an HTTP request that could consume memory resources.
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Medium 6.2
Suricata decode_base64: signature can do large memory allocation
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this, signatures using the keyword and setting can cause large…
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Medium 6.2
Suricata datasets: ruleset declared settings can lead to resource starvation
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Datasets declared in rules have an option to specify the `hashsize` to use. This size setting isn't properly limited, so the hash table alloc…
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Medium 6.5
Allocation of Resources Without Limits or Throttling in GitLab
A Denial of Service (DoS) issue has been discovered in GitLab CE/EE affecting all up to 17.8.7, 17.9 prior to 17.9.6 and 17.10 prior to 17.10.4 A denial of service could occur upon injecting oversized payloads into CI pipeline exports.
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Medium 5.3
Dell PowerScale OneFS, versions 9.5.0.0 through 9.10.0.0, contains an uncontrolled resource consumption vulnerability. …
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Medium 6.5
Helm Allows A Specially Crafted Chart Archive To Cause Out Of Memory Termination
Helm is a tool for managing Charts. A chart archive file can be crafted in a manner where it expands to be significantly larger uncompressed than compressed (e.g., >800x difference). When Helm loads this specially crafted chart, memory can be exhausted causin…
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Medium 6.5
WEB-T - Moderately critical - Access bypass, Denial of service - SA-CONTRIB-2025-030
Allocation of Resources Without Limits or Throttling, Incorrect Authorization vulnerability in Drupal WEB-T allows Excessive Allocation, Content Spoofing.This issue affects WEB-T: from 0.0.0 before 1.1.0.
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High 7.5
Apollo Router Query Validation Vulnerable to Excessive Resource Consumption via Named Fragment Processing
The Apollo Router Core is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. A vulnerability in Apollo Router's usage of Apollo Compiler allowed queries with deeply nested and reused name…
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Medium 6.5
Denial of Service by abusing xgrammar unbounded cache in memory
XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to 0.1.18, Xgrammar includes a cache for compiled grammars to increase performance with repeated use of the same grammar. This cache is held in memory. Since…
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Medium 5.9
Possible Denial of Service (DoS) in DNN.PLATFORM registration
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Possible denial of service with specially crafted information in the public registration form. This vulnerability is fixed in 9.13.8.
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High 7.5
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
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Medium 6.9
bep/imagemeta allows a potentially large memory allocation in PNG and WebP parsing
bep/imagemeta is a Go library for reading EXIF, IPTC and XMP image meta data from JPEG, TIFF, PNG, and WebP files. The buffer created for parsing metadata for PNG and WebP images was only bounded by their input data type, which could lead to potentially large…
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Medium 6.9
bep/imagemeta allows excessively large EXIF data structures
bep/imagemeta is a Go library for reading EXIF, IPTC and XMP image meta data from JPEG, TIFF, PNG, and WebP files. The EXIF data format allows for defining excessively large data structures in relatively small payloads. Before v0.10.0, If you didn't trust the…
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High 7.5
Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Named Fragment Expansion
The Apollo Router Core is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Prior to 1.61.2 and 2.1.1, a vulnerability in Apollo Router allowed queries with deeply nested and reused name…
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High 7.5
Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Optimization Bypass
The Apollo Router Core is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. A vulnerability in Apollo Router allowed queries with deeply nested and reused named fragments to be prohibiti…
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High 7.5
Apollo Gateway Query Planner Vulnerable to Excessive Resource Consumption via Optimization Bypass
Apollo Gateway provides utilities for combining multiple GraphQL microservices into a single GraphQL endpoint. Prior to 2.10.1, a vulnerability in Apollo Gateway allowed queries with deeply nested and reused named fragments to be prohibitively expensive to qu…
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High 7.5
Apollo Gateway Query Planner Vulnerable to Excessive Resource Consumption via Named Fragment Expansion
Apollo Gateway provides utilities for combining multiple GraphQL microservices into a single GraphQL endpoint. Prior to 2.10.1, a vulnerability in Apollo Gateway allowed queries with deeply nested and reused named fragments to be prohibitively expensive to qu…
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High 7.5
apollo-compiler Named Fragment Processing Vulnerability
apollo-compiler is a query-based compiler for the GraphQL query language. Prior to 1.27.0, a vulnerability in Apollo Compiler allowed queries with deeply nested and reused named fragments to be prohibitively expensive to validate. Named fragments were being p…
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Medium 5.3
Allocation of resources without limits or throttling issue exists in HMI ViewJet C-more series and HMI GC-A2 series, wh…
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High 7.5
Libsoup: denial of service attack to websocket server
A flaw was found in libsoup. The SoupWebsocketConnection may accept a large WebSocket message, which may cause libsoup to allocate memory and lead to a denial of service (DoS).
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Medium 6.0
DoS vulnerability due to uncontrolled resource exhaustion
Zabbix server is vulnerable to a DoS vulnerability due to uncontrolled resource exhaustion. An attacker can send specially crafted requests to the server, which will cause the server to allocate an excessive amount of memory and perform CPU-intensive decompre…
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Medium 5.8
Django Potential Denial of Service (DoS) on Windows
An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to…
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Medium 4.3
Allocation of Resources Without Limits or Throttling in GitLab
An issue has been discovered in GitLab EE/CE affecting all versions from 12.10 before 17.8.6, 17.9 before 17.9.3, and 17.10 before 17.10.1. A maliciously crafted file can cause uncontrolled CPU consumption when viewing the associated merge request.
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High 7.5
Nethermind Juno Potential Denial of Service (DoS) via Integer Overflow
An integer overflow in Nethermind Juno before v.12.05 within the Sierra bytecode decompression logic within the "cairo-lang-starknet-classes" library could allow remote attackers to trigger an infinite loop (and high CPU usage) by submitting a malicious Decla…
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Medium 5.3
Directus's S3 assets become unavailable after a burst of HEAD requests
Directus is a real-time API and App dashboard for managing SQL database content. The `@directus/storage-driver-s3` package starting in version 9.22.0 and prior to version 12.0.1, corresponding to Directus starting in version 9.22.0 and prior to 11.5.0, is vul…
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Medium 5.3
Directus's S3 assets become unavailable after a burst of malformed transformations
Directus is a real-time API and App dashboard for managing SQL database content. The `@directus/storage-driver-s3` package starting in version 9.22.0 and prior to version 12.0.1, corresponding to Directus starting in version 9.22.0 and prior to 11.5.0, is vul…
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Medium 4.9
Org.keycloak/keycloak-services: jwt token cache exhaustion leading to denial of service (dos) in keycloak
A flaw was found in Keycloak. When the configuration uses JWT tokens for authentication, the tokens are cached until expiration. If a client uses JWT tokens with an excessively long expiration time, for example, 24 or 48 hours, the cache can grow indefinitely…
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High 7.2
Enabled ICMP redirection in B&R APROL
An Allocation of Resources Without Limits or Throttling vulnerability in the operating system network configuration used in B&R APROL <4.4-00P5 may allow an unauthenticated adjacent attacker to per-form Denial-of-Service (DoS) attacks against the product.
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High 7.5
Denial of Service (DoS) in gaizhenbiao/chuanhuchatgpt
An unauthenticated Denial of Service (DoS) vulnerability was identified in ChuanhuChatGPT version 20240918, which could be exploited by sending large data payloads using a multipart boundary. Although a patch was applied for CVE-2024-7807, the issue can still…
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High 7.5
Denial of Service in gradio-app/gradio
A vulnerability in the file upload process of gradio-app/gradio version @gradio/video@0.10.2 allows for a Denial of Service (DoS) attack. An attacker can append a large number of characters to the end of a multipart boundary, causing the system to continuousl…
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High 7.5
Denial of Service in aimhubio/aim
In version 3.25.0 of aimhubio/aim, the tracking server is vulnerable to a denial of service attack. The server overrides the maximum size for websocket messages, allowing very large images to be tracked. This causes the server to become unresponsive to other …
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High 7.5
Unauthenticated Denial of Service in shaunwei/realchar
Realchar version v0.0.4 is vulnerable to an unauthenticated denial of service (DoS) attack. The vulnerability exists in the file upload request handling, where appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request cau…
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High 7.5
Insufficient Patch Leading to DoS in parisneo/lollms-webui
A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads. The server does not limit or validate the length of the boundary or the characters appended to it, allowing an attacker to craft requests w…
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High 7.5
Denial of Service in h2oai/h2o-3
A vulnerability in the `/3/ImportFiles` endpoint of h2oai/h2o-3 version 3.46.1 allows an attacker to cause a denial of service. The endpoint takes a single GET parameter, `path`, which can be recursively set to reference itself. This leads the server to repea…
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High 7.5
Denial of Service (DoS) via Multipart Boundary in stangirard/quivr
A Denial of Service (DoS) vulnerability in the file upload feature of stangirard/quivr v0.0.298 allows unauthenticated attackers to cause excessive resource consumption by appending characters to the end of a multipart boundary in an HTTP request. This leads …
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High 7.5
Unauthenticated Denial of Service in transformeroptimus/superagi
SuperAGI version v0.0.14 is vulnerable to an unauthenticated Denial of Service (DoS) attack. The vulnerability exists in the resource upload request, where appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request causes …
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High 7.5
Denial of Service in open-webui/open-webui
In version 0.3.8 of open-webui, an endpoint for converting markdown to HTML is exposed without authentication. A maliciously crafted markdown payload can cause the server to spend excessive time converting it, leading to a denial of service. The server become…
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High 7.5
Denial of Service in binary-husky/gpt_academic
A vulnerability in binary-husky/gpt_academic version 3.83 allows an attacker to cause a Denial of Service (DoS) by adding excessive characters to the end of a multipart boundary during file upload. This results in the server continuously processing each chara…