CWE-400
Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
CVE-2021-21274 (GCVE-0-2021-21274)
Vulnerability from cvelistv5 – Published: 2021-02-26 17:25 – Updated: 2024-08-03 18:09
VLAI
Title
Denial of service attack via .well-known lookups
Summary
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead to a denial of service attack where homeservers will consume significantly more resources when requesting the .well-known file of a malicious homeserver. This affects any server which accepts federation requests from untrusted servers. Issue is resolved in version 1.25.0. As a workaround the `federation_domain_whitelist` setting can be used to restrict the homeservers communicated with over federation.
Severity
4.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/matrix-org/synapse/security/ad… | x_refsource_CONFIRM |
| https://github.com/matrix-org/synapse/releases/ta… | x_refsource_MISC |
| https://github.com/matrix-org/synapse/pull/8950 | x_refsource_MISC |
| https://github.com/matrix-org/synapse/commit/ff5c… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| matrix-org | synapse |
Affected:
>=0.99.0, < 1.25.0
|
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CVE-2021-21285 (GCVE-0-2021-21285)
Vulnerability from cvelistv5 – Published: 2021-02-02 17:55 – Updated: 2024-08-03 18:09
VLAI
Title
Docker daemon crash during image pull of malicious image
Summary
In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.
Severity
6.5 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/moby/moby/security/advisories/… | x_refsource_CONFIRM |
| https://docs.docker.com/engine/release-notes/#20103 | x_refsource_MISC |
| https://github.com/moby/moby/releases/tag/v20.10.3 | x_refsource_MISC |
| https://github.com/moby/moby/releases/tag/v19.03.15 | x_refsource_MISC |
| https://github.com/moby/moby/commit/8d3179546e790… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021022… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4865 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/202107-23 | vendor-advisoryx_refsource_GENTOO |
Impacted products
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CVE-2021-21293 (GCVE-0-2021-21293)
Vulnerability from cvelistv5 – Published: 2021-02-02 21:35 – Updated: 2024-08-03 18:09
VLAI
Title
Unbounded connection acceptance leads to file handle exhaustion
Summary
blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. All servers running blaze-core before version 0.14.15 are affected by a vulnerability in which unbounded connection acceptance leads to file handle exhaustion. Blaze, accepts connections unconditionally on a dedicated thread pool. This has the net effect of amplifying degradation in services that are unable to handle their current request load, since incoming connections are still accepted and added to an unbounded queue. Each connection allocates a socket handle, which drains a scarce OS resource. This can also confound higher level circuit breakers which work based on detecting failed connections. The vast majority of affected users are using it as part of http4s-blaze-server <= 0.21.16. http4s provides a mechanism for limiting open connections, but is enforced inside the Blaze accept loop, after the connection is accepted and the socket opened. Thus, the limit only prevents the number of connections which can be simultaneously processed, not the number of connections which can be held open. The issue is fixed in version 0.14.15 for "NIO1SocketServerGroup". A "maxConnections" parameter is added, with a default value of 512. Concurrent connections beyond this limit are rejected. To run unbounded, which is not recommended, set a negative number. The "NIO2SocketServerGroup" has no such setting and is now deprecated. There are several possible workarounds described in the refrenced GitHub Advisory GHSA-xmw9-q7x9-j5qc.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/http4s/blaze/security/advisori… | x_refsource_CONFIRM |
| https://github.com/http4s/http4s/security/advisor… | x_refsource_MISC |
| https://github.com/http4s/blaze/commit/4f786177f9… | x_refsource_MISC |
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CVE-2021-21294 (GCVE-0-2021-21294)
Vulnerability from cvelistv5 – Published: 2021-02-02 21:40 – Updated: 2024-08-03 18:09
VLAI
Title
Unbounded connection acceptance in http4s-blaze-server
Summary
Http4s (http4s-blaze-server) is a minimal, idiomatic Scala interface for HTTP services. Http4s before versions 0.21.17, 0.22.0-M2, and 1.0.0-M14 have a vulnerability which can lead to a denial-of-service. Blaze-core, a library underlying http4s-blaze-server, accepts connections unboundedly on its selector pool. This has the net effect of amplifying degradation in services that are unable to handle their current request load, since incoming connections are still accepted and added to an unbounded queue. Each connection allocates a socket handle, which drains a scarce OS resource. This can also confound higher level circuit breakers which work based on detecting failed connections. http4s provides a general "MaxActiveRequests" middleware mechanism for limiting open connections, but it is enforced inside the Blaze accept loop, after the connection is accepted and the socket opened. Thus, the limit only prevents the number of connections which can be simultaneously processed, not the number of connections which can be held open. In 0.21.17, 0.22.0-M2, and 1.0.0-M14, a new "maxConnections" property, with a default value of 1024, has been added to the `BlazeServerBuilder`. Setting the value to a negative number restores unbounded behavior, but is strongly disrecommended. The NIO2 backend does not respect `maxConnections`. Its use is now deprecated in http4s-0.21, and the option is removed altogether starting in http4s-0.22. There are several possible workarounds described in the refrenced GitHub Advisory GHSA-xhv5-w9c5-2r2w.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
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CVE-2021-21296 (GCVE-0-2021-21296)
Vulnerability from cvelistv5 – Published: 2021-02-10 20:00 – Updated: 2024-08-03 18:09
VLAI
Title
Denial-of-service in Fleet
Summary
Fleet is an open source osquery manager. In Fleet before version 3.7.0 a malicious actor with a valid node key can send a badly formatted request that causes the Fleet server to exit, resulting in denial of service. This is possible only while a live query is currently ongoing. We believe the impact of this vulnerability to be low given the requirement that the actor has a valid node key. There is no information disclosure, privilege escalation, or code execution. The issue is fixed in Fleet 3.7.0.
Severity
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/fleetdm/fleet/security/advisor… | x_refsource_CONFIRM |
| https://www.npmjs.com/package/fleetctl | x_refsource_MISC |
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CVE-2021-21306 (GCVE-0-2021-21306)
Vulnerability from cvelistv5 – Published: 2021-02-08 21:20 – Updated: 2024-08-03 18:09
VLAI
Title
Denial of Service in Marked
Summary
Marked is an open-source markdown parser and compiler (npm package "marked"). In marked from version 1.1.1 and before version 2.0.0, there is a Regular expression Denial of Service vulnerability. This vulnerability can affect anyone who runs user generated code through marked. This vulnerability is fixed in version 2.0.0.
Severity
5.3 (Medium)
CWE
- CWE-400 - {"CWE-400":"Uncontrolled Resource Consumption"}
Assigner
References
5 references
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|---|---|
| https://github.com/markedjs/marked/security/advis… | x_refsource_CONFIRM |
| https://github.com/markedjs/marked/issues/1927 | x_refsource_MISC |
| https://github.com/markedjs/marked/pull/1864 | x_refsource_MISC |
| https://github.com/markedjs/marked/commit/7293251… | x_refsource_MISC |
| https://www.npmjs.com/package/marked | x_refsource_MISC |
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CVE-2021-21317 (GCVE-0-2021-21317)
Vulnerability from cvelistv5 – Published: 2021-02-16 17:45 – Updated: 2024-08-03 18:09
VLAI
Title
Denial of Service in uap-core
Summary
uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.
Severity
5.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ua-parser/uap-core/security/ad… | x_refsource_CONFIRM |
| https://github.com/ua-parser/uap-core/commit/dc99… | x_refsource_MISC |
| https://www.npmjs.com/package/uap-core | x_refsource_MISC |
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CVE-2021-21328 (GCVE-0-2021-21328)
Vulnerability from cvelistv5 – Published: 2021-02-26 01:45 – Updated: 2024-08-03 18:09
VLAI
Title
Denial of Service
Summary
Vapor is a web framework for Swift. In Vapor before version 4.40.1, there is a DoS attack against anyone who Bootstraps a metrics backend for their Vapor app. The following is the attack vector: 1. send unlimited requests against a vapor instance with different paths. this will create unlimited counters and timers, which will eventually drain the system. 2. downstream services might suffer from this attack as well by being spammed with error paths. This has been patched in 4.40.1. The `DefaultResponder` will rewrite any undefined route paths for to `vapor_route_undefined` to avoid unlimited counters.
Severity
5.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vapor/vapor/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/vapor/vapor/commit/e3aa712508d… | x_refsource_MISC |
| https://github.com/vapor/vapor/releases/tag/4.40.1 | x_refsource_MISC |
| https://vapor.codes/ | x_refsource_MISC |
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CVE-2021-21341 (GCVE-0-2021-21341)
Vulnerability from cvelistv5 – Published: 2021-03-22 23:40 – Updated: 2024-08-03 18:09
VLAI
Title
XStream can cause a Denial of Service
Summary
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Severity
7.5 (High)
Assigner
References
15 references
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CVE-2021-21348 (GCVE-0-2021-21348)
Vulnerability from cvelistv5 – Published: 2021-03-22 23:45 – Updated: 2024-08-03 18:09
VLAI
Title
XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)
Summary
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Severity
5.3 (Medium)
Assigner
References
15 references
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Mitigation
Phase: Architecture and Design
Description:
- 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
Phase: Architecture and Design
Description:
- 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
Phase: Architecture and Design
Description:
- Ensure that protocols have specific limits of scale placed on them.
Mitigation
Phase: Implementation
Description:
- 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.