Common Weakness Enumeration
CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5448 vulnerabilities reference this CWE, most recent first.
CVE-2021-37865 (GCVE-0-2021-37865)
Vulnerability from cvelistv5 – Published: 2022-01-18 16:51 – Updated: 2024-12-06 23:11
VLAI
EPSS
VEX
Title
Server-side Denial of Service while processing a specifically crafted GIF file
Summary
Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates/ | x_refsource_MISC |
| https://hackerone.com/reports/1428260 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
unspecified , ≤ 6.2
(custom)
Unaffected: 6.1.1 , < unspecified (custom) Unaffected: 6.0.4 , < unspecified (custom) Unaffected: 5.39.3 , < unspecified (custom) Unaffected: 5.37.6 , < unspecified (custom) |
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CVE-2021-37137 (GCVE-0-2021-37137)
Vulnerability from cvelistv5 – Published: 2021-10-19 00:00 – Updated: 2024-08-04 01:16
VLAI
EPSS
VEX
Summary
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.
Severity
No CVSS data available.
CWE
Assigner
References
13 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Netty project | Netty |
Affected:
unspecified , < 4.1.68Final
(custom)
|
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CVE-2021-37136 (GCVE-0-2021-37136)
Vulnerability from cvelistv5 – Published: 2021-10-19 00:00 – Updated: 2024-08-04 01:16
VLAI
EPSS
VEX
Summary
The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack
Severity
No CVSS data available.
CWE
Assigner
References
13 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Netty project | Netty |
Affected:
unspecified , < 4.1.68Final
(custom)
|
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CVE-2021-36395 (GCVE-0-2021-36395)
Vulnerability from cvelistv5 – Published: 2023-03-06 00:00 – Updated: 2025-03-07 19:09
VLAI
EPSS
VEX
Summary
In Moodle, the file repository's URL parsing required additional recursion handling to mitigate the risk of recursion denial of service.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
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CVE-2021-34792 (GCVE-0-2021-34792)
Vulnerability from cvelistv5 – Published: 2021-10-27 18:56 – Updated: 2024-11-07 21:45
VLAI
EPSS
VEX
Title
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Resource Exhaustion Denial of Service Vulnerability
Summary
A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) Software |
Affected:
n/a
|
Date Public
2021-10-27 00:00
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CVE-2021-33609 (GCVE-0-2021-33609)
Vulnerability from cvelistv5 – Published: 2021-10-13 10:58 – Updated: 2024-09-16 21:04
VLAI
EPSS
VEX
Title
Denial of service in DataCommunicator class in Vaadin 8
Summary
Missing check in DataCommunicator class in com.vaadin:vaadin-server versions 8.0.0 through 8.14.0 (Vaadin 8.0.0 through 8.14.0) allows authenticated network attacker to cause heap exhaustion by requesting too many rows of data.
Severity
4.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://vaadin.com/security/cve-2021-33609 | x_refsource_CONFIRM |
| https://github.com/vaadin/framework/pull/12415 | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Vaadin | Vaadin |
Affected:
8.0.0 , < unspecified
(custom)
Affected: unspecified , ≤ 8.14.0 (custom) |
|
| Vaadin | vaadin-server |
Affected:
8.0.0 , < unspecified
(custom)
Affected: unspecified , ≤ 8.14.0 (custom) |
Date Public
2021-10-13 00:00
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CVE-2021-33580 (GCVE-0-2021-33580)
Vulnerability from cvelistv5 – Published: 2021-08-18 07:50 – Updated: 2024-08-03 23:50
VLAI
EPSS
VEX
Title
regex injection leading to DoS
Summary
User controlled `request.getHeader("Referer")`, `request.getRequestURL()` and `request.getQueryString()` are used to build and run a regex expression. The attacker doesn't have to use a browser and may send a specially crafted Referer header programmatically. Since the attacker controls the string and the regex pattern he may cause a ReDoS by regex catastrophic backtracking on the server side. This problem has been fixed in Roller 6.0.2.
Severity
No CVSS data available.
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/r9d967d80af9… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2021/08/18/1 | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Roller |
Affected:
Apache Roller , < 6.0.2
(custom)
|
Credits
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CVE-2021-32839 (GCVE-0-2021-32839)
Vulnerability from cvelistv5 – Published: 2021-09-20 17:10 – Updated: 2025-11-03 21:44
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service in sqlparse
Summary
sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/andialbrecht/sqlparse/security… | x_refsource_CONFIRM |
| https://github.com/andialbrecht/sqlparse/commit/8… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2024… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| andialbrecht | sqlparse |
Affected:
>= 0.4.0, < 0.4.2
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CVE-2021-32838 (GCVE-0-2021-32838)
Vulnerability from cvelistv5 – Published: 2021-09-20 17:30 – Updated: 2024-08-03 23:33
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service in flask-restx
Summary
Flask-RESTX (pypi package flask-restx) is a community driven fork of Flask-RESTPlus. Flask-RESTX before version 0.5.1 is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex. This is fixed in version 0.5.1.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/advisories/GHSA-3q6g-vf58-7m4g | x_refsource_CONFIRM |
| https://github.com/python-restx/flask-restx/issues/372 | x_refsource_MISC |
| https://github.com/python-restx/flask-restx/commi… | x_refsource_MISC |
| https://github.com/python-restx/flask-restx/blob/… | x_refsource_MISC |
| https://pypi.org/project/flask-restx/ | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-restx | flask-restx |
Affected:
< 0.5.1
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CVE-2021-32832 (GCVE-0-2021-32832)
Vulnerability from cvelistv5 – Published: 2021-08-30 20:55 – Updated: 2024-08-03 23:33
VLAI
EPSS
VEX
Title
ReDOS in Rocket.Chat
Summary
Rocket.Chat is an open-source fully customizable communications platform developed in JavaScript. In Rocket.Chat before versions 3.11.3, 3.12.2, and 3.13 an issue with certain regular expressions could lead potentially to Denial of Service. This was fixed in versions 3.11.3, 3.12.2, and 3.13.
Severity
4.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://docs.rocket.chat/guides/security/security… | x_refsource_MISC |
| https://securitylab.github.com/advisories/GHSL-20… | x_refsource_CONFIRM |
| https://github.com/RocketChat/Rocket.Chat/release… | x_refsource_MISC |
| https://github.com/RocketChat/Rocket.Chat/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RocketChat | Rocket.Chat |
Affected:
< 3.11.3
|
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Mitigation
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. 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
Architecture and Design
- 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
Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
Mitigation
Implementation
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.