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CVE-2021-4021

A vulnerability was found in Radare2 in versions prior to 5.6.2, 5.6.0, 5.5.4 and 5.5.2. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
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CVE-2021-46668

mariadb: MariaDB through 10.5.9 allows an application crash via certain long SELECT DISTINCT statements

MariaDB through 10.5.9 allows an application crash via certain long SELECT DISTINCT statements that improperly interact with storage-engine resource limitations for temporary data structures.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-46149

mediawiki: searching for a very long key may lead to DoS

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A denial of service (resource consumption) can be accomplished by searching for a very long key in a Language Name Search.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
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CVE-2021-45829

hdf5: segmentation fault may cause a Denial of Service

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-45115

django: Denial-of-service possibility in UserAttributeSimilarityValidator

An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. UserAttributeSimilarityValidator incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.

CVSS 3.1 · 7.5 High EPSS 2.6% KEV · Not listed
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Django Fedora Satellite and 1 more
CVE-2021-45042

vault: clusters using the integrated storage backend allowed an authenticated user to cause a DoS of the storage backend

In HashiCorp Vault and Vault Enterprise before 1.7.7, 1.8.x before 1.8.6, and 1.9.x before 1.9.1, clusters using the Integrated Storage backend allowed an authenticated user (with write permissions to a kv secrets engine) to cause a panic and denial of service of the storage backend. The earliest affected version is 1.4.0.

CVSS 3.1 · 4.9 Medium EPSS 1.5% KEV · Not listed
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CVE-2021-44716

golang: net/http: limit growth of header canonicalization cache

net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.

CVSS 3.1 · 7.5 High EPSS 4.3% KEV · Not listed
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Debian Golang Netapp and 1 more
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CVE-2021-44527

A vulnerability found in UniFi Switch firmware Version 5.43.35 and earlier allows a malicious actor who has already gained access to the network to perform a Deny of Service (DoS) attack on the affected switch.This vulnerability is fixed in UniFi Switch firmware 5.76.6 and later.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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Ui
CVE-2021-43854

Inefficient Regular Expression Complexity in nltk

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. Versions prior to 3.6.5 are vulnerable to regular expression denial of service (ReDoS) attacks. The vulnerability is present in PunktSentenceTokenizer, sent_tokenize and word_tokenize. Any users of this class, or these two functions, are vulnerable to the ReDoS attack. In short, a specifically crafted long input to any of these vulnerable functions will cause them to take a significant amount of execution time. If your program relies on any of the vulnerable functions for tokenizing unpredictable user input, then we would strongly recommend upgrading to a version of NLTK without the vulnerability. For users unable to upgrade the execution time can be bounded by limiting the maximum length of an input to any of the vulnerable functions. Our recommendation is to implement such a limit.

CVSS 3.1 · 7.5 High EPSS 2.8% KEV · Not listed
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CVE-2021-43843

Insufficient patch for Regular Expression Denial of Service (ReDoS) to jsx-slack v4.5.1

jsx-slack is a package for building JSON objects for Slack block kit surfaces from JSX. The maintainers found the patch for CVE-2021-43838 in jsx-slack v4.5.1 is insufficient tfor protection from a Regular Expression Denial of Service (ReDoS) attack. If an attacker can put a lot of JSX elements into `<blockquote>` tag _with including multibyte characters_, an internal regular expression for escaping characters may consume an excessive amount of computing resources. v4.5.1 passes the test against ASCII characters but misses the case of multibyte characters. jsx-slack v4.5.2 has updated regular expressions for escaping blockquote characters to prevent catastrophic backtracking. It is also including an updated test case to confirm rendering multiple tags in `<blockquote>` with multibyte characters.

CVSS 3.1 · 5.3 Medium EPSS 2.0% KEV · Not listed
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CVE-2021-43838

Regular Expression Denial of Service (ReDoS) in jsx-slack

jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can put a lot of JSX elements into `<blockquote>` tag, an internal regular expression for escaping characters may consume an excessive amount of computing resources. jsx-slack v4.5.1 has patched to a regex for escaping blockquote characters. Users are advised to upgrade as soon as possible.

CVSS 3.1 · 5.3 Medium EPSS 1.4% KEV · Not listed
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CVE-2021-43173

Hanging RRDP request

In NLnet Labs Routinator prior to 0.10.2, a validation run can be delayed significantly by an RRDP repository by not answering but slowly drip-feeding bytes to keep the connection alive. This can be used to effectively stall validation. While Routinator has a configurable time-out value for RRDP connections, this time-out was only applied to individual read or write operations rather than the complete request. Thus, if an RRDP repository sends a little bit of data before that time-out expired, it can continuously extend the time it takes for the request to finish. Since validation will only continue once the update of an RRDP repository has concluded, this delay will cause validation to stall, leading to Routinator continuing to serve the old data set or, if in the initial validation run directly after starting, never serve any data at all.

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
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CVE-2021-42836

GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.

CVSS 3.1 · 7.5 High EPSS 2.4% KEV · Not listed
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CVE-2021-42521

There is a NULL pointer dereference vulnerability in VTK before 9.2.5, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
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Vtk
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Vtk
CVE-2021-42120

Missing Character Length (Denial of Service) in TopEase

Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on all object attributes allows an authenticated remote attacker with Object Modification privileges to insert arbitrarily long strings, eventually leading to exhaustion of the underlying resource.

CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed
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CVE-2021-41865

nomad: Denial of service by submitting incomplete job specifications

HashiCorp Nomad and Nomad Enterprise 1.1.1 through 1.1.5 allowed authenticated users with job submission capabilities to cause denial of service by submitting incomplete job specifications with a Consul mesh gateway and host networking mode. Fixed in 1.1.6.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-41817

ruby: Regular expression denial of service vulnerability of Date parsing methods

Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1.

CVSS 3.1 · 7.5 High EPSS 3.5% KEV · Not listed
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CVE-2021-41800

mediawiki: mishandled PoolCounter's protection may result DoS when visiting Special:Contributions.

MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time). Visiting Special:Contributions can sometimes result in a long running SQL query because PoolCounter protection is mishandled.

CVSS 3.1 · 5.3 Medium EPSS 1.9% KEV · Not listed
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CVE-2021-41799

mediawiki: ApiQueryBacklinks can cause a full table scan and as a result DoS

MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time). ApiQueryBacklinks (action=query&list=backlinks) can cause a full table scan.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
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CVE-2021-41546

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.14.1), RUGGEDCOM ROX RX1400 (All versions < V2.14.1), RUGGEDCOM ROX RX1500 (All versions < V2.14.1), RUGGEDCOM ROX RX1501 (All versions < V2.14.1), RUGGEDCOM ROX RX1510 (All versions < V2.14.1), RUGGEDCOM ROX RX1511 (All versions < V2.14.1), RUGGEDCOM ROX RX1512 (All versions < V2.14.1), RUGGEDCOM ROX RX1524 (All versions < V2.14.1), RUGGEDCOM ROX RX1536 (All versions < V2.14.1), RUGGEDCOM ROX RX5000 (All versions < V2.14.1). Affected devices write crashdumps without checking if enough space is available on the filesystem. Once the crashdump fills the entire root filesystem, affected devices fail to boot successfully. An attacker can leverage this vulnerability to cause a permanent Denial-of-Service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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