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.
5531 vulnerabilities reference this CWE, most recent first.
GHSA-26GG-9GV2-V27J
Vulnerability from github – Published: 2026-04-28 09:34 – Updated: 2026-05-06 19:51
VLAI
Summary
Spring AI Vulnerable to OOM by attacker-controlled PDF
Details
In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by ForkPDFLayoutTextStripper.
Affected versions: Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)
Severity
6.5 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.ai:spring-ai-pdf-document-reader"
},
"ranges": [
{
"events": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.0.6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.ai:spring-ai-pdf-document-reader"
},
"ranges": [
{
"events": [
{
"introduced": "1.1.0"
},
{
"fixed": "1.1.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-40980"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T19:51:54Z",
"nvd_published_at": "2026-04-28T09:16:16Z",
"severity": "MODERATE"
},
"details": "In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by `ForkPDFLayoutTextStripper`.\n\nAffected versions:\nSpring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)",
"id": "GHSA-26gg-9gv2-v27j",
"modified": "2026-05-06T19:51:54Z",
"published": "2026-04-28T09:34:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40980"
},
{
"type": "PACKAGE",
"url": "https://github.com/spring-projects/spring-ai"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-40980"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Spring AI Vulnerable to OOM by attacker-controlled PDF"
}
GHSA-26J8-6884-FCQW
Vulnerability from github – Published: 2022-05-21 00:00 – Updated: 2022-06-02 00:00
VLAI
Details
A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-27640"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-20T13:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions \u003c V1.5.18), SIMATIC CP 443-1 RNA (All versions \u003c V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.",
"id": "GHSA-26j8-6884-fcqw",
"modified": "2022-06-02T00:00:22Z",
"published": "2022-05-21T00:00:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27640"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-26M2-9G2Q-V45Q
Vulnerability from github – Published: 2026-06-15 21:30 – Updated: 2026-06-15 21:30
VLAI
Details
In Spring Cloud Sleuth, it is possible for a user to provide specially crafted calls that may cause a denial-of-service (DoS) condition. The application is vulnerable when it uses a vulnerable version of org.springframework.cloud:spring-cloud-sleuth-instrumentation and Spring TX instrumentation is not disabled.
Affected versions: Spring Cloud Sleuth 3.1.0 through 3.1.13.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2026-41708"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-15T20:16:27Z",
"severity": "HIGH"
},
"details": "In Spring Cloud Sleuth, it is possible for a user to provide specially crafted calls that may cause a denial-of-service (DoS) condition. The application is vulnerable when it uses a vulnerable version of org.springframework.cloud:spring-cloud-sleuth-instrumentation and Spring TX instrumentation is not disabled.\n\nAffected versions:\nSpring Cloud Sleuth 3.1.0 through 3.1.13.",
"id": "GHSA-26m2-9g2q-v45q",
"modified": "2026-06-15T21:30:39Z",
"published": "2026-06-15T21:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41708"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-41708"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-26MQ-CRW9-R9MC
Vulnerability from github – Published: 2022-05-17 01:22 – Updated: 2022-05-17 01:22
VLAI
Details
Uncontrolled Resource Consumption vulnerability in SYNO.Core.PortForwarding.Rules in Synology DiskStation (DSM) before 6.1.1-15088 allows remote authenticated attacker to exhaust the memory resources of the machine, causing a denial of service attack.
Severity
4.9 (Medium)
{
"affected": [],
"aliases": [
"CVE-2017-12076"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-08-28T19:29:00Z",
"severity": "MODERATE"
},
"details": "Uncontrolled Resource Consumption vulnerability in SYNO.Core.PortForwarding.Rules in Synology DiskStation (DSM) before 6.1.1-15088 allows remote authenticated attacker to exhaust the memory resources of the machine, causing a denial of service attack.",
"id": "GHSA-26mq-crw9-r9mc",
"modified": "2022-05-17T01:22:10Z",
"published": "2022-05-17T01:22:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12076"
},
{
"type": "WEB",
"url": "https://www.synology.com/en-global/support/security/Synology_SA_17_48_DSM"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-26MQ-G447-6CJQ
Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2022-05-24 19:12
VLAI
Details
An issue was discovered in iPortalis iCS 7.1.13.0. Attackers can send a sequence of requests to rapidly cause .NET Input Validation errors. This increases the size of the log file on the remote server until memory is exhausted, therefore consuming the maximum amount of resources (triggering a denial of service condition).
{
"affected": [],
"aliases": [
"CVE-2020-9000"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-01T11:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in iPortalis iCS 7.1.13.0. Attackers can send a sequence of requests to rapidly cause .NET Input Validation errors. This increases the size of the log file on the remote server until memory is exhausted, therefore consuming the maximum amount of resources (triggering a denial of service condition).",
"id": "GHSA-26mq-g447-6cjq",
"modified": "2022-05-24T19:12:49Z",
"published": "2022-05-24T19:12:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9000"
},
{
"type": "WEB",
"url": "https://websec.nl/blog"
},
{
"type": "WEB",
"url": "https://websec.nl/blog/6127847280e759c7d31286d0/cve%20report%20august%202021"
},
{
"type": "WEB",
"url": "https://www.ultimum.nl/updates"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-26VR-8J45-3R4W
Vulnerability from github – Published: 2021-04-06 17:31 – Updated: 2022-08-10 23:33
VLAI
Summary
Jetty vulnerable to incorrect handling of invalid large TLS frame, exhausting CPU resources
Details
Impact
When using SSL/TLS with Jetty, either with HTTP/1.1, HTTP/2, or WebSocket, the server may receive an invalid large (greater than 17408) TLS frame that is incorrectly handled, causing CPU resources to eventually reach 100% usage.
Workarounds
The problem can be worked around by compiling the following class:
package org.eclipse.jetty.server.ssl.fix6072;
import java.nio.ByteBuffer;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLHandshakeException;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.io.ssl.SslConnection;
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.SslConnectionFactory;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.annotation.Name;
import org.eclipse.jetty.util.ssl.SslContextFactory;
public class SpaceCheckingSslConnectionFactory extends SslConnectionFactory
{
public SpaceCheckingSslConnectionFactory(@Name("sslContextFactory") SslContextFactory factory, @Name("next") String nextProtocol)
{
super(factory, nextProtocol);
}
@Override
protected SslConnection newSslConnection(Connector connector, EndPoint endPoint, SSLEngine engine)
{
return new SslConnection(connector.getByteBufferPool(), connector.getExecutor(), endPoint, engine, isDirectBuffersForEncryption(), isDirectBuffersForDecryption())
{
@Override
protected SSLEngineResult unwrap(SSLEngine sslEngine, ByteBuffer input, ByteBuffer output) throws SSLException
{
SSLEngineResult results = super.unwrap(sslEngine, input, output);
if ((results.getStatus() == SSLEngineResult.Status.BUFFER_UNDERFLOW ||
results.getStatus() == SSLEngineResult.Status.OK && results.bytesConsumed() == 0 && results.bytesProduced() == 0) &&
BufferUtil.space(input) == 0)
{
BufferUtil.clear(input);
throw new SSLHandshakeException("Encrypted buffer max length exceeded");
}
return results;
}
};
}
}
This class can be deployed by:
+ The resulting class file should be put into a jar file (eg sslfix6072.jar)
+ The jar file should be made available to the server. For a normal distribution this can be done by putting the file into ${jetty.base}/lib
+ Copy the file ${jetty.home}/modules/ssl.mod to ${jetty.base}/modules
+ Edit the ${jetty.base}/modules/ssl.mod file to have the following section:
[lib]
lib/sslfix6072.jar
- Copy the file
${jetty.home}/etc/jetty-https.xmland${jetty.home}/etc/jetty-http2.xmlto${jetty.base}/etc - Edit files
${jetty.base}/etc/jetty-https.xmland${jetty.base}/etc/jetty-http2.xml, changing any reference oforg.eclipse.jetty.server.SslConnectionFactorytoorg.eclipse.jetty.server.ssl.fix6072.SpaceCheckingSslConnectionFactory. For example:
<Call name="addIfAbsentConnectionFactory">
<Arg>
<New class="org.eclipse.jetty.server.ssl.fix6072.SpaceCheckingSslConnectionFactory">
<Arg name="next">http/1.1</Arg>
<Arg name="sslContextFactory"><Ref refid="sslContextFactory"/></Arg>
</New>
</Arg>
</Call>
- Restart Jetty
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.eclipse.jetty:jetty-server"
},
"ranges": [
{
"events": [
{
"introduced": "7.2.2"
},
{
"fixed": "9.4.39"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.eclipse.jetty:jetty-server"
},
"ranges": [
{
"events": [
{
"introduced": "10.0.0"
},
{
"fixed": "10.0.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.eclipse.jetty:jetty-server"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0"
},
{
"fixed": "11.0.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-28165"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-551",
"CWE-755"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-02T23:02:13Z",
"nvd_published_at": "2021-04-01T15:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nWhen using SSL/TLS with Jetty, either with HTTP/1.1, HTTP/2, or WebSocket, the server may receive an invalid large (greater than 17408) TLS frame that is incorrectly handled, causing CPU resources to eventually reach 100% usage.\n\n### Workarounds\n\nThe problem can be worked around by compiling the following class:\n```java\npackage org.eclipse.jetty.server.ssl.fix6072;\n\nimport java.nio.ByteBuffer;\nimport javax.net.ssl.SSLEngine;\nimport javax.net.ssl.SSLEngineResult;\nimport javax.net.ssl.SSLException;\nimport javax.net.ssl.SSLHandshakeException;\n\nimport org.eclipse.jetty.io.EndPoint;\nimport org.eclipse.jetty.io.ssl.SslConnection;\nimport org.eclipse.jetty.server.Connector;\nimport org.eclipse.jetty.server.SslConnectionFactory;\nimport org.eclipse.jetty.util.BufferUtil;\nimport org.eclipse.jetty.util.annotation.Name;\nimport org.eclipse.jetty.util.ssl.SslContextFactory;\n\npublic class SpaceCheckingSslConnectionFactory extends SslConnectionFactory\n{\n public SpaceCheckingSslConnectionFactory(@Name(\"sslContextFactory\") SslContextFactory factory, @Name(\"next\") String nextProtocol)\n {\n super(factory, nextProtocol);\n }\n\n @Override\n protected SslConnection newSslConnection(Connector connector, EndPoint endPoint, SSLEngine engine)\n {\n return new SslConnection(connector.getByteBufferPool(), connector.getExecutor(), endPoint, engine, isDirectBuffersForEncryption(), isDirectBuffersForDecryption())\n {\n @Override\n protected SSLEngineResult unwrap(SSLEngine sslEngine, ByteBuffer input, ByteBuffer output) throws SSLException\n {\n SSLEngineResult results = super.unwrap(sslEngine, input, output);\n\n if ((results.getStatus() == SSLEngineResult.Status.BUFFER_UNDERFLOW ||\n results.getStatus() == SSLEngineResult.Status.OK \u0026\u0026 results.bytesConsumed() == 0 \u0026\u0026 results.bytesProduced() == 0) \u0026\u0026\n BufferUtil.space(input) == 0)\n {\n BufferUtil.clear(input);\n throw new SSLHandshakeException(\"Encrypted buffer max length exceeded\");\n }\n return results;\n }\n };\n }\n}\n```\nThis class can be deployed by:\n + The resulting class file should be put into a jar file (eg sslfix6072.jar)\n + The jar file should be made available to the server. For a normal distribution this can be done by putting the file into ${jetty.base}/lib\n + Copy the file `${jetty.home}/modules/ssl.mod` to `${jetty.base}/modules`\n + Edit the `${jetty.base}/modules/ssl.mod` file to have the following section:\n\n```\n[lib]\nlib/sslfix6072.jar\n```\n\n+ Copy the file `${jetty.home}/etc/jetty-https.xml` and`${jetty.home}/etc/jetty-http2.xml` to `${jetty.base}/etc`\n+ Edit files `${jetty.base}/etc/jetty-https.xml` and `${jetty.base}/etc/jetty-http2.xml`, changing any reference of `org.eclipse.jetty.server.SslConnectionFactory` to `org.eclipse.jetty.server.ssl.fix6072.SpaceCheckingSslConnectionFactory`. For example:\n```xml\n \u003cCall name=\"addIfAbsentConnectionFactory\"\u003e\n \u003cArg\u003e\n \u003cNew class=\"org.eclipse.jetty.server.ssl.fix6072.SpaceCheckingSslConnectionFactory\"\u003e\n \u003cArg name=\"next\"\u003ehttp/1.1\u003c/Arg\u003e\n \u003cArg name=\"sslContextFactory\"\u003e\u003cRef refid=\"sslContextFactory\"/\u003e\u003c/Arg\u003e\n \u003c/New\u003e\n \u003c/Arg\u003e\n \u003c/Call\u003e\n```\n+ Restart Jetty",
"id": "GHSA-26vr-8j45-3r4w",
"modified": "2022-08-10T23:33:55Z",
"published": "2021-04-06T17:31:30Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/eclipse/jetty.project/security/advisories/GHSA-26vr-8j45-3r4w"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28165"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc907ed7b089828364437de5ed57fa062330970dc1bc5cd214b711f77@%3Ccommits.zookeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc6c43c3180c0efe00497c73dd374cd34b62036cb67987ad42c1f2dce@%3Creviews.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc4dbc9907b0bdd634200ac90a15283d9c143c11af66e7ec72128d020@%3Cjira.kafka.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc4779abc1cface47e956cf9f8910f15d79c24477e7b1ac9be076a825@%3Cjira.kafka.apache.org%3E"
},
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},
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},
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},
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},
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},
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},
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},
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},
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},
{
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"url": "https://lists.apache.org/thread.html/rae8bbc5a516f3e21b8a55e61ff6ad0ced03bdbd116d2170a3eed9f5c@%3Creviews.spark.apache.org%3E"
},
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"url": "https://lists.apache.org/thread.html/ra9dd15ba8a4fb7e42c7fe948a6d6b3868fd6bbf8e3fb37fcf33b2cd0@%3Cnotifications.zookeeper.apache.org%3E"
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"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
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"summary": "Jetty vulnerable to incorrect handling of invalid large TLS frame, exhausting CPU resources"
}
GHSA-26WQ-535G-R2W5
Vulnerability from github – Published: 2024-04-12 03:30 – Updated: 2024-04-12 03:30
VLAI
Details
An issue has been discovered in GitLab EE affecting all versions before 16.8.6, all versions starting from 16.9 before 16.9.4, all versions starting from 16.10 before 16.10.2. It was possible for an attacker to cause a denial of service using malicious crafted content in a junit test report file.
Severity
4.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-6678"
],
"database_specific": {
"cwe_ids": [
"CWE-1333",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-12T01:15:57Z",
"severity": "MODERATE"
},
"details": "An issue has been discovered in GitLab EE affecting all versions before 16.8.6, all versions starting from 16.9 before 16.9.4, all versions starting from 16.10 before 16.10.2. It was possible for an attacker to cause a denial of service using malicious crafted content in a junit test report file.",
"id": "GHSA-26wq-535g-r2w5",
"modified": "2024-04-12T03:30:42Z",
"published": "2024-04-12T03:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6678"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/2268037"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/434689"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-273F-4JVC-R526
Vulnerability from github – Published: 2022-05-13 01:24 – Updated: 2024-03-21 03:33
VLAI
Details
** DISPUTED ** Integer signedness error in the pmcraid_ioctl_passthrough function in drivers/scsi/pmcraid.c in the Linux kernel before 3.1 might allow local users to cause a denial of service (memory consumption or memory corruption) via a negative size value in an ioctl call. NOTE: this may be a vulnerability only in unusual environments that provide a privileged program for obtaining the required file descriptor.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2011-2906"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-05-24T23:55:00Z",
"severity": "MODERATE"
},
"details": "** DISPUTED ** Integer signedness error in the pmcraid_ioctl_passthrough function in drivers/scsi/pmcraid.c in the Linux kernel before 3.1 might allow local users to cause a denial of service (memory consumption or memory corruption) via a negative size value in an ioctl call. NOTE: this may be a vulnerability only in unusual environments that provide a privileged program for obtaining the required file descriptor.",
"id": "GHSA-273f-4jvc-r526",
"modified": "2024-03-21T03:33:09Z",
"published": "2022-05-13T01:24:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-2906"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/b5b515445f4f5a905c5dd27e6e682868ccd6c09d"
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{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2011/08/09/8"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-273W-7FXJ-PCP6
Vulnerability from github – Published: 2023-03-06 21:30 – Updated: 2025-03-07 21:32
VLAI
Summary
Moodle vulnerable to Uncontrolled Resource Consumption
Details
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)
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "moodle/moodle"
},
"ranges": [
{
"events": [
{
"introduced": "3.11.0-beta"
},
{
"fixed": "3.11.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "moodle/moodle"
},
"ranges": [
{
"events": [
{
"introduced": "3.10.0-beta"
},
{
"fixed": "3.10.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "moodle/moodle"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.9.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-36395"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-674"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-07T20:57:09Z",
"nvd_published_at": "2023-03-06T21:15:00Z",
"severity": "HIGH"
},
"details": "In Moodle, the file repository\u0027s URL parsing required additional recursion handling to mitigate the risk of recursion denial of service.",
"id": "GHSA-273w-7fxj-pcp6",
"modified": "2025-03-07T21:32:22Z",
"published": "2023-03-06T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36395"
},
{
"type": "PACKAGE",
"url": "https://github.com/moodle/moodle"
},
{
"type": "WEB",
"url": "https://moodle.org/mod/forum/discuss.php?d=424801"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Moodle vulnerable to Uncontrolled Resource Consumption"
}
GHSA-2742-GCCF-CJGJ
Vulnerability from github – Published: 2022-05-01 07:30 – Updated: 2025-04-03 18:30
VLAI
Details
Multiple unspecified vulnerabilities in MDaemon and WorldClient in Alt-N Technologies MDaemon before 9.50 allow attackers to cause a denial of service (memory consumption) via unspecified vectors resulting in memory leaks.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2006-5708"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2006-11-04T01:07:00Z",
"severity": "MODERATE"
},
"details": "Multiple unspecified vulnerabilities in MDaemon and WorldClient in Alt-N Technologies MDaemon before 9.50 allow attackers to cause a denial of service (memory consumption) via unspecified vectors resulting in memory leaks.",
"id": "GHSA-2742-gccf-cjgj",
"modified": "2025-04-03T18:30:26Z",
"published": "2022-05-01T07:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2006-5708"
},
{
"type": "WEB",
"url": "http://files.altn.com/MDaemon/Release/RelNotes_en.txt"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.