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CVE-2021-28713

xen: rogue backends can cause DoS of guests via high frequency events

Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "driver domains". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-28712

xen: rogue backends can cause DoS of guests via high frequency events

Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "driver domains". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-28711

xen: rogue backends can cause DoS of guests via high frequency events

Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "driver domains". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-28651

squid: denial of service in URN processing

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.

CVSS 3.1 · 7.5 High EPSS 7.4% KEV · Not listed
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CVE-2021-28148

grafana: usage insights API endpoint doesn't limit number of requests which could result in DoS

One of the usage insights HTTP API endpoints in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 is accessible without any authentication. This allows any unauthenticated user to send an unlimited number of requests to the endpoint, leading to a denial of service (DoS) attack against a Grafana Enterprise instance.

CVSS 3.1 · 7.5 High EPSS 3.5% KEV · Not listed
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CVE-2021-28092

nodejs-is-svg: ReDoS via malicious string

The is-svg package 2.1.0 through 4.2.1 for Node.js uses a regular expression that is vulnerable to Regular Expression Denial of Service (ReDoS). If an attacker provides a malicious string, is-svg will get stuck processing the input for a very long time.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
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CVE-2021-28089

Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
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CVE-2021-27358

grafana: snapshot feature allow an unauthenticated remote attacker to trigger a DoS via a remote API call

The snapshot feature in Grafana 6.7.3 through 7.4.1 can allow an unauthenticated remote attackers to trigger a Denial of Service via a remote API call if a commonly used configuration is set.

CVSS 3.1 · 7.5 High EPSS 83.0% KEV · Not listed
CVE-2021-27292

nodejs-ua-parser-js: ReDoS via malicious User-Agent header

ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.

CVSS 3.1 · 7.5 High EPSS 3.4% KEV · Not listed
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Acm Jaeger Logging and 2 more
CVE-2021-27291

python-pygments: ReDoS in multiple lexers

In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.

CVSS 3.1 · 7.5 High EPSS 3.9% KEV · Not listed
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CVE-2021-26945

OpenEXR: Integer-overflow in bool Imf_2_5::readDeepTile<Imf_2_5::DeepTiledInputPart>

An integer overflow leading to a heap-buffer overflow was found in OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-26260

OpenEXR: Integer-overflow in Imf_2_5::DwaCompressor::initializeBuffers

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR. This is a different flaw from CVE-2021-23215.

CVSS 3.1 · 5.5 Medium EPSS 1.1% KEV · Not listed
CVE-2021-25909

ZIV AUTOMATION 4CCT Denial of Service vulnerability

ZIV Automation 4CCT-EA6-334126BF firmware version 3.23.80.27.36371, allows an unauthenticated, remote attacker to cause a denial of service condition on the device. An attacker could exploit this vulnerability by sending specific packets to the port 7919.

CVSS 3.1 · 8.6 High EPSS 1.3% KEV · Not listed
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CVE-2021-25701

The fUSBHub driver in the PCoIP Software Client prior to version 21.07.0 had an error in object management during the handling of a variety of IOCTLs, which allowed an attacker to cause a denial of service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-25659

A vulnerability has been identified in Automation License Manager 5 (All versions), Automation License Manager 6 (All versions < V6.0 SP9 Update 2). Sending specially crafted packets to port 4410/tcp of an affected system could lead to extensive memory being consumed and as such could cause a denial-of-service preventing legitimate users from using the system.

CVSS 3.1 · 7.5 High EPSS 1.0% KEV · Not listed
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CVE-2021-25252

Trend Micro's Virus Scan API (VSAPI) and Advanced Threat Scan Engine (ATSE) - are vulnerable to a memory exhaustion vulnerability that may lead to denial-of-service or system freeze if exploited by an attacker using a specially crafted file.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Apple Emc Linux and 4 more
CVE-2021-25227

Trend Micro Antivirus for Mac 2021 (Consumer) is vulnerable to a memory exhaustion vulnerability that could lead to disabling all the scanning functionality within the application. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability - i.e. the attacker must already have access to the target system (either legitimately or via another exploit).

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
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Products
CVE-2021-25226

A memory exhaustion vulnerability in Trend Micro ServerProtect for Linux 3.0 could allow a local attacker to craft specific files that can cause a denial-of-service on the affected product. The specific flaw exists within a scan engine component. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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