CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5412 vulnerabilities reference this CWE, most recent first.
GHSA-WJPF-6J9Q-4H5X
Vulnerability from github – Published: 2022-05-24 17:22 – Updated: 2022-05-24 17:22TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains a resource management error vulnerability, which may allow a remote attacker to stop the network functions of the products or execute a malicious program via a specially crafted packet.
{
"affected": [],
"aliases": [
"CVE-2020-5600"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-07-07T09:15:00Z",
"severity": "MODERATE"
},
"details": "TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains a resource management error vulnerability, which may allow a remote attacker to stop the network functions of the products or execute a malicious program via a specially crafted packet.",
"id": "GHSA-wjpf-6j9q-4h5x",
"modified": "2022-05-24T17:22:34Z",
"published": "2022-05-24T17:22:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5600"
},
{
"type": "WEB",
"url": "https://jvn.jp/en/vu/JVNVU95413676/index.html"
},
{
"type": "WEB",
"url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-005_en.pdf"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WJPV-64V2-2QPQ
Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-20 19:13In h2oai/h2o-3 version 3.46.0.1, the run_tool command exposes classes in the water.tools package through the ast parser. This includes the XGBoostLibExtractTool class, which can be exploited to shut down the server and write large files to arbitrary directories, leading to a denial of service.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "h2o"
},
"ranges": [
{
"events": [
{
"introduced": "3.34.0.1"
},
{
"last_affected": "3.46.0.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "ai.h2o:h2o-ext-xgboost"
},
"ranges": [
{
"events": [
{
"introduced": "3.34.0.1"
},
{
"last_affected": "3.46.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-10572"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2025-03-20T19:13:16Z",
"nvd_published_at": "2025-03-20T10:15:17Z",
"severity": "HIGH"
},
"details": "In h2oai/h2o-3 version 3.46.0.1, the `run_tool` command exposes classes in the `water.tools` package through the `ast` parser. This includes the `XGBoostLibExtractTool` class, which can be exploited to shut down the server and write large files to arbitrary directories, leading to a denial of service.",
"id": "GHSA-wjpv-64v2-2qpq",
"modified": "2025-03-20T19:13:16Z",
"published": "2025-03-20T12:32:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10572"
},
{
"type": "PACKAGE",
"url": "https://github.com/h2oai/h2o-3"
},
{
"type": "WEB",
"url": "https://github.com/h2oai/h2o-3/blob/5e45e780f597961bda73adff765976db975f204b/h2o-extensions/xgboost/src/main/java/water/tools/XGBoostLibExtractTool.java#L12"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/db8939a0-9be8-4d0f-a8b0-1bd181666da2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "H2O Vulnerable to Denial of Service (DoS) and File Write"
}
GHSA-WJQH-4VFG-J2PJ
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-43545"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:19Z",
"severity": "HIGH"
},
"details": "Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability",
"id": "GHSA-wjqh-4vfg-j2pj",
"modified": "2024-10-08T18:33:16Z",
"published": "2024-10-08T18:33:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43545"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43545"
}
],
"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-WJRC-F8QW-J9Q6
Vulnerability from github – Published: 2022-05-14 00:55 – Updated: 2022-05-14 00:55In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().
{
"affected": [],
"aliases": [
"CVE-2018-19838"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-04T09:29:00Z",
"severity": "MODERATE"
},
"details": "In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().",
"id": "GHSA-wjrc-f8qw-j9q6",
"modified": "2022-05-14T00:55:57Z",
"published": "2022-05-14T00:55:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19838"
},
{
"type": "WEB",
"url": "https://github.com/sass/libsass/issues/2660"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WJXG-4572-7WFG
Vulnerability from github – Published: 2025-07-15 21:31 – Updated: 2025-07-15 21:31Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
{
"affected": [],
"aliases": [
"CVE-2025-50091"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-15T20:15:45Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
"id": "GHSA-wjxg-4572-7wfg",
"modified": "2025-07-15T21:31:42Z",
"published": "2025-07-15T21:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50091"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2025.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WJXJ-5M7G-MG7Q
Vulnerability from github – Published: 2023-11-23 18:30 – Updated: 2024-09-09 17:38Bouncy Castle for Java before 1.73 contains a potential Denial of Service (DoS) issue within the Bouncy Castle org.bouncycastle.openssl.PEMParser class. This class parses OpenSSL PEM encoded streams containing X.509 certificates, PKCS8 encoded keys, and PKCS7 objects. Parsing a file that has crafted ASN.1 data through the PEMParser causes an OutOfMemoryError, which can enable a denial of service attack.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-ext-jdk16"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk14"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk15"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk15to18"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk16"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c 1.70"
},
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk15on"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcpkix-jdk18on"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-ext-jdk15on"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.bouncycastle:bcprov-jdk18on"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.73"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-33202"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-11-24T16:54:01Z",
"nvd_published_at": "2023-11-23T16:15:07Z",
"severity": "MODERATE"
},
"details": "Bouncy Castle for Java before 1.73 contains a potential Denial of Service (DoS) issue within the Bouncy Castle org.bouncycastle.openssl.PEMParser class. This class parses OpenSSL PEM encoded streams containing X.509 certificates, PKCS8 encoded keys, and PKCS7 objects. Parsing a file that has crafted ASN.1 data through the PEMParser causes an OutOfMemoryError, which can enable a denial of service attack.",
"id": "GHSA-wjxj-5m7g-mg7q",
"modified": "2024-09-09T17:38:48Z",
"published": "2023-11-23T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33202"
},
{
"type": "WEB",
"url": "https://github.com/bcgit/bc-java/commit/0c576892862ed41894f49a8f639112e8d66d229c"
},
{
"type": "WEB",
"url": "https://bouncycastle.org"
},
{
"type": "PACKAGE",
"url": "https://github.com/bcgit/bc-java"
},
{
"type": "WEB",
"url": "https://github.com/bcgit/bc-java/wiki/CVE-2023-33202"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240125-0001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Bouncy Castle Denial of Service (DoS)"
}
GHSA-WJXW-GH3M-7PM5
Vulnerability from github – Published: 2022-05-24 20:54 – Updated: 2022-06-07 14:30Impact
A vulnerable node, if configured to use high verbosity logging, can be made to crash when handling specially crafted p2p messages sent from an attacker node.
Patches
The following PR addresses the problem: https://github.com/ethereum/go-ethereum/pull/24507
Workarounds
Aside from applying the PR linked above, setting loglevel to default level (INFO) makes the node not vulnerable to this attack.
Credits
This bug was reported by nrv via bounty@ethereum.org, who has gracefully requested that the bounty rewards be donated to Médecins sans frontières.
For more information
If you have any questions or comments about this advisory: * Open an issue in go-ethereum
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/ethereum/go-ethereum"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.17"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-29177"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2022-05-24T20:54:55Z",
"nvd_published_at": "2022-05-20T17:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nA vulnerable node, if configured to use high verbosity logging, can be made to crash when handling specially crafted p2p messages sent from an attacker node. \n\n### Patches\n\nThe following PR addresses the problem: https://github.com/ethereum/go-ethereum/pull/24507\n\n### Workarounds\n\nAside from applying the PR linked above, setting loglevel to default level (`INFO`) makes the node not vulnerable to this attack.\n\n### Credits\n\nThis bug was reported by `nrv` via bounty@ethereum.org, who has gracefully requested that the bounty rewards be donated to M\u00e9decins sans fronti\u00e8res.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [go-ethereum](https://github.com/ethereum/go-ethereum)\n",
"id": "GHSA-wjxw-gh3m-7pm5",
"modified": "2022-06-07T14:30:11Z",
"published": "2022-05-24T20:54:55Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-wjxw-gh3m-7pm5"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-29177"
},
{
"type": "WEB",
"url": "https://github.com/ethereum/go-ethereum/pull/24507"
},
{
"type": "PACKAGE",
"url": "github.com/ethereum/go-ethereum"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "DoS via malicious p2p message in Go Ethereum"
}
GHSA-WM9W-RJJ3-J356
Vulnerability from github – Published: 2024-07-03 21:39 – Updated: 2025-11-03 21:31Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100.
Users are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.0-M21"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.25"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0-M1"
},
{
"fixed": "9.0.90"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.0-M21"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.25"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0-M1"
},
{
"fixed": "9.0.90"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
"events": [
{
"introduced": "8.5.0"
},
{
"last_affected": "8.5.100"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "8.5.0"
},
{
"last_affected": "8.5.100"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-34750"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-755"
],
"github_reviewed": true,
"github_reviewed_at": "2024-07-05T20:39:41Z",
"nvd_published_at": "2024-07-03T20:15:04Z",
"severity": "HIGH"
},
"details": "Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed. \n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100.\n\nUsers are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.",
"id": "GHSA-wm9w-rjj3-j356",
"modified": "2025-11-03T21:31:11Z",
"published": "2024-07-03T21:39:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34750"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/2344a4c0d03e307ba6b8ab6dc8b894cc8bac63f2"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/2afae300c9ac9c0e516e2e9de580847d925365c3"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/9fec9a82887853402833a80b584e3762c7423f5f"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240816-0004"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-10.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-11.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-9.html"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Apache Tomcat - Denial of Service"
}
GHSA-WMG4-8CP2-HPG9
Vulnerability from github – Published: 2021-04-19 14:54 – Updated: 2024-09-24 15:43Impact
Sydent does not limit the size of requests it receives from HTTP clients. A malicious user could send an HTTP request with a very large body, leading to disk space exhaustion and denial of service.
Sydent also does not limit response size for requests it makes to remote Matrix homeservers. A malicious homeserver could return a very large response, again leading to memory exhaustion and denial of service.
This affects any server which accepts registration requests from untrusted clients.
Patches
Patched by 89071a1, 0523511, f56eee3.
Workarounds
Request sizes can be limited in an HTTP reverse-proxy.
There are no known workarounds for the problem with overlarge responses.
For more information
If you have any questions or comments about this advisory, email us at security@matrix.org.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "matrix-sydent"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-29430"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-15T20:49:34Z",
"nvd_published_at": "2021-04-15T21:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\n\nSydent does not limit the size of requests it receives from HTTP clients. A malicious user could send an HTTP request with a very large body, leading to disk space exhaustion and denial of service.\n\nSydent also does not limit response size for requests it makes to remote Matrix homeservers. A malicious homeserver could return a very large response, again leading to memory exhaustion and denial of service.\n\nThis affects any server which accepts registration requests from untrusted clients.\n\n### Patches\n\nPatched by 89071a1, 0523511, f56eee3.\n\n### Workarounds\n\nRequest sizes can be limited in an HTTP reverse-proxy.\n\nThere are no known workarounds for the problem with overlarge responses.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at security@matrix.org.",
"id": "GHSA-wmg4-8cp2-hpg9",
"modified": "2024-09-24T15:43:44Z",
"published": "2021-04-19T14:54:04Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/matrix-org/sydent/security/advisories/GHSA-wmg4-8cp2-hpg9"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29430"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/sydent/commit/0523511d2fb40f2738f8a8549868f44b96e5dab7"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/sydent/commit/89071a1a754c69a50deac89e6bb74002d4cda19d"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/sydent/commit/f56eee315b6c44fdd9f6aa785cc2ec744a594428"
},
{
"type": "PACKAGE",
"url": "https://github.com/matrix-org/sydent"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/sydent/releases/tag/v2.3.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-21.yaml"
},
{
"type": "WEB",
"url": "https://pypi.org/project/matrix-sydent"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Sydent vulnerable to denial of service attack via memory exhaustion"
}
GHSA-WMPQ-8MXR-7PXX
Vulnerability from github – Published: 2022-05-14 01:41 – Updated: 2022-05-14 01:41The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.
{
"affected": [],
"aliases": [
"CVE-2017-9732"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-20T23:29:00Z",
"severity": "HIGH"
},
"details": "The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.",
"id": "GHSA-wmpq-8mxr-7pxx",
"modified": "2022-05-14T01:41:36Z",
"published": "2022-05-14T01:41:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9732"
},
{
"type": "WEB",
"url": "https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1"
},
{
"type": "WEB",
"url": "https://github.com/irsl/knc-memory-exhaustion"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/150534/knc-Kerberized-NetCat-Denial-Of-Service.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2018/Nov/65"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
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
- 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
Ensure that protocols have specific limits of scale placed on them.
Mitigation
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.