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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High 7.5
Denial of Service (DOS) in imartinez/privategpt
A vulnerability in imartinez/privategpt version 0.5.0 allows for a Denial of Service (DOS) attack. When uploading a file, if an attacker appends a large number of characters to the end of a multipart boundary, the system will continuously process these charac…
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High 7.5
Improper Input Validation in danny-avila/librechat
In danny-avila/librechat version git 0c2a583, there is an improper input validation vulnerability. The application uses multer middleware for handling multipart file uploads. When using in-memory storage (the default setting for multer), there is no limit on …
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High 7.5
Denial of Service in bentoml/bentoml
BentoML version v1.3.4post1 is vulnerable to a Denial of Service (DoS) attack. The vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. This causes the server to continuously proces…
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High 7.5
Denial of Service in aimhubio/aim
A vulnerability in aimhubio/aim version 3.25.0 allows for a denial of service (DoS) attack. The issue arises when a large number of tracked metrics are retrieved simultaneously from the Aim web API, causing the web server to become unresponsive. The root caus…
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High 7.5
Denial of Service in danswer-ai/danswer
A vulnerability in danswer-ai/danswer version 0.9.0 allows for denial of service through memory exhaustion. The issue arises from the use of a vulnerable version of the starlette package (<=0.49) via fastapi, which was patched in fastapi version 0.115.3. The …
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High 7.5
Denial of Service in danswer-ai/danswer
A vulnerability in danswer-ai/danswer v0.3.94 allows an attacker to cause a Denial of Service (DoS) by uploading a file with a malformed multipart boundary. By appending a large number of characters to the end of the multipart boundary, the server continuousl…
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High 7.5
Unauthenticated DoS via Multipart Boundary in automatic1111/stable-diffusion-webui
automatic1111/stable-diffusion-webui version 1.10.0 contains a vulnerability where 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 c…
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High 7.5
Allocation of Resources Without Limits or Throttling in ollama/ollama
A vulnerability in ollama/ollama <=0.3.14 allows a malicious user to create a customized GGUF model file, upload it to the Ollama server, and create it. This can cause the server to allocate unlimited memory, leading to a Denial of Service (DoS) attack.
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High 7.5
Denial of Service (DoS) in berriai/litellm
A Denial of Service (DoS) vulnerability exists in berriai/litellm version v1.44.5. This vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. The server continuously processes each c…
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High 7.5
Denial of Service in haotian-liu/llava
A vulnerability in haotian-liu/llava v1.2.0 allows an attacker to cause a Denial of Service (DoS) by appending a large number of characters to the end of a multipart boundary in a file upload request. This causes the server to continuously process each charac…
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High 7.5
Denial of Service (DoS) via Multipart Request in szad670401/hyperlpr
A vulnerability in szad670401/hyperlpr v3.0 allows for a Denial of Service (DoS) attack. The server fails to handle excessive characters appended to the end of multipart boundaries, regardless of the character used. This flaw can be exploited by sending malfo…
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Medium 6.5
vLLM denial of service via outlines unbounded cache on disk
vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. The outlines library is one of the backends used by vLLM to support structured output (a.k.a. guided decoding). Outlines provides an optional cache for its compiled grammars…
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High 8.7
jsPDF Bypass Regular Expression Denial of Service (ReDoS)
jsPDF is a library to generate PDFs in JavaScript. Prior to 3.0.1, user control of the first argument of the addImage method results in CPU utilization and denial of service. If given the possibility to pass unsanitised image urls to the addImage method, a us…
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High 7.5
Memory Exhaustion in Expr Parser with Unrestricted Input
Expr is an expression language and expression evaluation for Go. Prior to version 1.17.0, if the Expr expression parser is given an unbounded input string, it will attempt to compile the entire string and generate an Abstract Syntax Tree (AST) node for each p…
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Medium 6.5
Allocation of Resources Without Limits or Throttling in GitLab
An issue was discovered in GitLab EE affecting all versions starting with 12.3 before 17.7.7, 17.8 prior to 17.8.5, and 17.9 prior to 17.9.2. A vulnerability in certain GitLab instances could allow an attacker to cause a denial of service condition by manipul…
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Medium 6.5
Allocation of Resources Without Limits or Throttling in GitLab
An issue was discovered in GitLab CE/EE affecting all versions before 17.7.7, 17.8 prior to 17.8.5, and 17.9 prior to 17.9.2. where a denial of service vulnerability could allow an attacker to cause a system reboot under certain conditions.
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High 7.7
ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib to decompress SAML …
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High 7.5
Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets. This vulnerability is due to im…
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High 7.4
Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity
A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco…
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Medium 5.5
powerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC
In the Linux kernel, the following vulnerability has been resolved: powerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC Erhard reported the following KASAN hit while booting his PowerMac G4 with a KASAN-enabled kernel 6.13-rc6:…
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High 7.8
btrfs: fix double accounting race when btrfs_run_delalloc_range() failed
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double accounting race when btrfs_run_delalloc_range() failed [BUG] When running btrfs with block size (4K) smaller than page size (64K, aarch64), there is a very high chance to cr…
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Medium 6.5
An issue was discovered in Datalust Seq before 2024.3.13545. Expansion of identifiers in message templates can be used …
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Medium 4.3
ReadJXLImage in JXL in GraphicsMagick before 1.3.46 lacks image dimension resource limits.
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High 7.5
DoS Vulnerability in TraceContextPropagator.Extract - OpenTelemetry.Api
### Impact _What kind of vulnerability is it? Who is impacted?_ A vulnerability in `OpenTelemetry.Api` package `1.10.0` to `1.11.1` could cause a [Denial of Service (DoS) when a tracestate and traceparent header is received](https://github.com/open-telemetry/…
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Medium 6.5CVE-2024-57972 Public exploit
The pairing API request handler in Microsoft HoloLens 1 (Windows Holographic) through 10.0.17763.3046 and HoloLens 2 (W…
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Medium 5.0
Django Vulnerable to Allocation of Resources Without Limits or Throttling
An issue was discovered in Django 5.1 before 5.1.7, 5.0 before 5.0.13, and 4.2 before 4.2.20. The django.utils.text.wrap() method and wordwrap template filter are subject to a potential denial-of-service attack when used with very long strings.
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High 7.5
OpenTelemetry .NET has a Denial of Service (DoS) Vulnerability in API Package
OpenTelemetry dotnet is a dotnet telemetry framework. A vulnerability in OpenTelemetry.Api package 1.10.0 to 1.11.1 could cause a Denial of Service (DoS) when a tracestate and traceparent header is received. Even if an application does not explicitly use trac…
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Critical 9.2
Denial of Service (DoS) in WeGIA due to Recursive Crawling of Dynamic URLs
WeGIA is an open source Web Manager for Institutions with a focus on Portuguese language users. A Denial of Service (DoS) vulnerability exists in WeGIA. This vulnerability allows any unauthenticated user to cause the server to become unresponsive by performin…
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Medium 5.8
CGI has Denial of Service (DoS) potential in Cookie.parse
In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw cookie value it processes. This oversight can lead …
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Medium 5.9
Openssh: denial-of-service in openssh
A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may k…
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Critical 9.3
Lack of rate-limiting in password change mechanism in CyberArk Endpoint Privilege Manager
Application does not limit the number or frequency of user interactions, such as the number of incoming requests. At the "/EPMUI/VfManager.asmx/ChangePassword" endpoint it is possible to perform a brute force attack on the current password in use. This issue …
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Medium 5.3
Mastodon's rate-limits are missing on `/auth/setup`
Mastodon is a self-hosted, federated microblogging platform. Starting in version 4.2.0 and prior to versions 4.2.16 and 4.3.4, the rate limits are missing on `/auth/setup`. Without those rate limits, an attacker can craft requests that will send an email to a…
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High 7.5
Potential denial of service in golang.org/x/crypto
SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.
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Medium 6.6
Go JOSE's Parsing Vulnerable to Denial of Service
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. In versions on the 4.x branch prior to ve…
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Critical —
Namada-apps allows Excessive Computation in Mempool Validation
### Impact A malicious transaction may cause an expensive computation in mempool validation. A transaction with multiple repeated sections causes the section hash calculation used for signature validation to grow exponentially (and potentially even cubic) in …
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Critical —
Namada-apps can Crash with Excessive Computation in Mempool Validation
### Impact A malicious transaction may cause a crash in mempool validation. A transaction with authorization section containing 256 public keys or more with valid matching signatures triggers an integer overflow in signature verification that causes a the nod…
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Medium 4.3
A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 allows attackers to …
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Medium 5.3
A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Cinema Booking System v1.0 allows attackers to s…
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Medium 4.3
A lack of rate limiting in the 'Forgot Password', 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 a…
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Medium 6.5
A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Event Ticketing System v1.0 allows attackers to …