Common Weakness Enumeration

CWE-400

Discouraged

Uncontrolled Resource Consumption

Abstraction: Class · Status: Draft

The product does not properly control the allocation and maintenance of a limited resource.

5435 vulnerabilities reference this CWE, most recent first.

GHSA-3GF2-723M-W3FV

Vulnerability from github – Published: 2022-02-19 00:01 – Updated: 2025-05-30 21:30
VLAI
Details

In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-25313"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-02-18T05:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.",
  "id": "GHSA-3gf2-723m-w3fv",
  "modified": "2025-05-30T21:30:52Z",
  "published": "2022-02-19T00:01:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-25313"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libexpat/libexpat/pull/558"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202209-24"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220303-0008"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5085"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2022/02/19/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3GFG-G579-3WMQ

Vulnerability from github – Published: 2026-04-21 21:31 – Updated: 2026-04-21 21:31
VLAI
Details

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.45. 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).

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-34267"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-21T21:16:30Z",
    "severity": "MODERATE"
  },
  "details": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.45. 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-3gfg-g579-3wmq",
  "modified": "2026-04-21T21:31:25Z",
  "published": "2026-04-21T21:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34267"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2026.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-3GP6-22QR-4J7F

Vulnerability from github – Published: 2022-05-13 01:44 – Updated: 2022-05-13 01:44
VLAI
Details

A persistent denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a malicious, network-based, authenticated attacker to consume enough system resources to cause a persistent denial of service by visiting certain specific URLs on the server.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2017-2333"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-04-24T15:59:00Z",
    "severity": "MODERATE"
  },
  "details": "A persistent denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a malicious, network-based, authenticated attacker to consume enough system resources to cause a persistent denial of service by visiting certain specific URLs on the server.",
  "id": "GHSA-3gp6-22qr-4j7f",
  "modified": "2022-05-13T01:44:46Z",
  "published": "2022-05-13T01:44:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2333"
    },
    {
      "type": "WEB",
      "url": "https://kb.juniper.net/JSA10783"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/97608"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3GVP-54V2-2JRP

Vulnerability from github – Published: 2023-04-04 15:30 – Updated: 2023-04-07 22:09
VLAI
Summary
Directus API vulnerable to denial of service
Details

An issue found in Directus API v.2.2.0 allows a remote attacker to cause a denial of service via a great amount of HTTP requests.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "directus"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-19850"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-04-07T22:09:07Z",
    "nvd_published_at": "2023-04-04T15:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue found in Directus API v.2.2.0 allows a remote attacker to cause a denial of service via a great amount of HTTP requests.",
  "id": "GHSA-3gvp-54v2-2jrp",
  "modified": "2023-04-07T22:09:07Z",
  "published": "2023-04-04T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-19850"
    },
    {
      "type": "WEB",
      "url": "https://github.com/directus/api/issues/982"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/directus/v8-archive"
    }
  ],
  "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": "Directus API vulnerable to denial of service"
}

GHSA-3GW4-M5W7-V89C

Vulnerability from github – Published: 2020-06-11 00:04 – Updated: 2024-11-18 16:26
VLAI
Summary
Uncontrolled Resource Consumption in Indy Node
Details

Summary

Indy Node has a bug in TAA handling code. The current primary can be crashed with a malformed transaction from a client, which leads to a view change. Repeated rapid view changes have the potential of bringing down the network.

Discovery

On May 18, Evernym's monitoring of Sovrin StagingNet showed a report of StagingNet losing sufficient consensus to validate write transactions. The problem resolved itself within a few minutes. On May 20th we saw the alert multiple times, and we began analyzing the logs of our steward node. On May 21st we continued to see the alerts with increasing frequency.

It appears that someone is unknowingly sending a malformed transaction, and retrying when the transaction fails. The cause of the errors appear to be the TAA acceptance.

Proposed actions

  • Reproduce problem in integration tests and create a fix
  • Do a hotfix release branching from last stable (current master have some things merged that are too risky)
  • Upgrade BuilderNet, StagingNet and MainNet as soon as possible
  • Improve testing strategy on Indy Node to reduce probability of such bugs

Notes

  • The journalctl logs also show an out-of-memory problem on the Australia node. We need to evaluate if this should be raised as a separate issue.
Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "indy-node"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.12.2"
            },
            {
              "fixed": "1.12.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.12.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-11090"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-11T00:02:06Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "# Summary\nIndy Node has a bug in TAA handling code. The current primary can be crashed with a malformed transaction from a client, which leads to a view change. Repeated rapid view changes have the potential of bringing down the network.\n\n# Discovery\nOn May 18, Evernym\u0027s monitoring of Sovrin StagingNet showed a report of StagingNet losing sufficient consensus to validate write transactions. The problem resolved itself within a few minutes. On May 20th we saw the alert multiple times, and we began analyzing the logs of our steward node. On May 21st we continued to see the alerts with increasing frequency.\n\nIt appears that someone is unknowingly sending a malformed transaction, and retrying when the transaction fails. The cause of the errors appear to be the TAA acceptance.\n\n# Proposed actions\n* Reproduce problem in integration tests and create a fix\n* Do a hotfix release branching from last stable (current master have some things merged that are too risky)\n* Upgrade BuilderNet, StagingNet and MainNet as soon as possible\n* Improve testing strategy on Indy Node to reduce probability of such bugs\n\n# Notes\n* The journalctl logs also show an out-of-memory problem on the Australia node. We need to evaluate if this should be raised as a separate issue.",
  "id": "GHSA-3gw4-m5w7-v89c",
  "modified": "2024-11-18T16:26:06Z",
  "published": "2020-06-11T00:04:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/hyperledger/indy-node/security/advisories/GHSA-3gw4-m5w7-v89c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11090"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/hyperledger/indy-node"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hyperledger/indy-node/blob/master/CHANGELOG.md#1123"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/indy-node/PYSEC-2020-47.yaml"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/indy-node/1.12.3"
    }
  ],
  "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:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Uncontrolled Resource Consumption in Indy Node"
}

GHSA-3GXG-HFHR-6G9X

Vulnerability from github – Published: 2023-02-21 18:30 – Updated: 2025-03-17 18:31
VLAI
Details

Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-23009"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-02-21T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.",
  "id": "GHSA-3gxg-hfhr-6g9x",
  "modified": "2025-03-17T18:31:33Z",
  "published": "2023-02-21T18:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23009"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libreswan/libreswan/issues/954"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MFOIQX2LRL43P3GJT33DE7G7COHNXDN"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSMYJH7MC2FZGCY5NH5AXULO3ISXIHOF"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MFOIQX2LRL43P3GJT33DE7G7COHNXDN"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CSMYJH7MC2FZGCY5NH5AXULO3ISXIHOF"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5368"
    }
  ],
  "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-3H26-8WFG-F6VH

Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2022-05-24 17:36
VLAI
Details

In read_metadata_vorbiscomment_ of stream_decoder.c, there is possible memory exhaustion due to a memory leak. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-124775381

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-0487"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-15T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In read_metadata_vorbiscomment_ of stream_decoder.c, there is possible memory exhaustion due to a memory leak. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-124775381",
  "id": "GHSA-3h26-8wfg-f6vh",
  "modified": "2022-05-24T17:36:26Z",
  "published": "2022-05-24T17:36:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0487"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2020-12-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-3H29-52VH-PQGR

Vulnerability from github – Published: 2021-05-07 15:53 – Updated: 2022-10-07 20:39
VLAI
Summary
Uncontrolled Resource Consumption in Apache Tika
Details

A carefully crafted or corrupt PSD file can cause excessive memory usage in Apache Tika's PSDParser in versions 1.0-1.23.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.23"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tika:tika"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0"
            },
            {
              "fixed": "1.24"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-1950"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-05T22:51:14Z",
    "nvd_published_at": "2020-03-23T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A carefully crafted or corrupt PSD file can cause excessive memory usage in Apache Tika\u0027s PSDParser in versions 1.0-1.23.",
  "id": "GHSA-3h29-52vh-pqgr",
  "modified": "2022-10-07T20:39:59Z",
  "published": "2021-05-07T15:53:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1950"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/tika"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r463b1a67817ae55fe022536edd6db34e8f9636971188430cbcf8a8dd%40%3Cdev.tika.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00035.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4564-1"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
    }
  ],
  "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": "Uncontrolled Resource Consumption in Apache Tika"
}

GHSA-3H52-CX59-C456

Vulnerability from github – Published: 2026-03-29 15:48 – Updated: 2026-04-10 20:21
VLAI
Summary
OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation
Details

Summary

Feishu webhook reads and parses unauthenticated request bodies before signature validation

Affected Packages / Versions

  • Package: openclaw
  • Affected versions: <= 2026.3.24
  • First patched version: 2026.3.25
  • Latest published npm version at verification time: 2026.3.24

Details

Feishu webhook handling previously parsed JSON before signature validation, which let unauthenticated callers force full JSON parsing work before rejection. Commit 5e8cb22176e9235e224be0bc530699261eb60e53 reads the raw request body, validates the signature first, and only then parses JSON.

Verified vulnerable on tag v2026.3.24 and fixed on main by commit 5e8cb22176e9235e224be0bc530699261eb60e53.

Fix Commit(s)

  • 5e8cb22176e9235e224be0bc530699261eb60e53
Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.3.28"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35640"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-29T15:48:58Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nFeishu webhook reads and parses unauthenticated request bodies before signature validation\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Affected versions: `\u003c= 2026.3.24`\n- First patched version: `2026.3.25`\n- Latest published npm version at verification time: `2026.3.24`\n\n## Details\n\nFeishu webhook handling previously parsed JSON before signature validation, which let unauthenticated callers force full JSON parsing work before rejection. Commit `5e8cb22176e9235e224be0bc530699261eb60e53` reads the raw request body, validates the signature first, and only then parses JSON.\n\nVerified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `5e8cb22176e9235e224be0bc530699261eb60e53`.\n\n## Fix Commit(s)\n\n- `5e8cb22176e9235e224be0bc530699261eb60e53`",
  "id": "GHSA-3h52-cx59-c456",
  "modified": "2026-04-10T20:21:35Z",
  "published": "2026-03-29T15:48:58Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35640"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation"
}

GHSA-3H57-HMJ3-GJ3P

Vulnerability from github – Published: 2023-03-08 17:20 – Updated: 2025-02-13 18:41
VLAI
Summary
Rack has possible DoS Vulnerability in Multipart MIME parsing
Details

There is a possible DoS vulnerability in the Multipart MIME parsing code in Rack. This vulnerability has been assigned the CVE identifier CVE-2023-27530.

Versions Affected: All. Not affected: None Fixed Versions: 3.0.4.2, 2.2.6.3, 2.1.4.3, 2.0.9.3

Impact

The Multipart MIME parsing code in Rack limits the number of file parts, but does not limit the total number of parts that can be uploaded. Carefully crafted requests can abuse this and cause multipart parsing to take longer than expected.

All users running an affected release should either upgrade or use one of the workarounds immediately.

Workarounds

A proxy can be configured to limit the POST body size which will mitigate this issue.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.1.4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-27530"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-08T17:20:04Z",
    "nvd_published_at": "2023-03-10T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "There is a possible DoS vulnerability in the Multipart MIME parsing code in Rack. This vulnerability has been assigned the CVE identifier CVE-2023-27530.\n\nVersions Affected: All. Not affected: None Fixed Versions: 3.0.4.2, 2.2.6.3, 2.1.4.3, 2.0.9.3\n\n# Impact\nThe Multipart MIME parsing code in Rack limits the number of file parts, but does not limit the total number of parts that can be uploaded. Carefully crafted requests can abuse this and cause multipart parsing to take longer than expected.\n\nAll users running an affected release should either upgrade or use one of the workarounds immediately.\n\n# Workarounds\nA proxy can be configured to limit the POST body size which will mitigate this issue.",
  "id": "GHSA-3h57-hmj3-gj3p",
  "modified": "2025-02-13T18:41:56Z",
  "published": "2023-03-08T17:20:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27530"
    },
    {
      "type": "WEB",
      "url": "https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rack/rack"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2023-27530.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20231208-0015"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5530"
    }
  ],
  "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": "Rack has possible DoS Vulnerability in Multipart MIME parsing"
}

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.