CVE-2024-49767 (GCVE-0-2024-49767)

Vulnerability from cvelistv5 – Published: 2024-10-25 19:41 – Updated: 2026-05-20 22:24
VLAI
Title
Werkzeug possible resource exhaustion when parsing file data in forms
Summary
Werkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.
Severity
6.9 (Medium)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
pallets werkzeug Affected: >= 2.0.0rc1, < 3.0.6
Create a notification for this product.
pallets Quart Affected: < 0.20.0
Create a notification for this product.
palletsprojects werkzeug Affected: 0 , < 3.0.6 (custom)
    cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20250103-0007/\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-01-03T12:04:27.829Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49767\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-25T20:06:53.070201Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*\"], \"vendor\": \"palletsprojects\", \"product\": \"werkzeug\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"3.0.6\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-25T20:07:46.576Z\"}}], \"cna\": {\"title\": \"Werkzeug possible resource exhaustion when parsing file data in forms\", \"source\": {\"advisory\": \"GHSA-q34m-jh98-gwm2\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 6.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"pallets\", \"product\": \"werkzeug\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 2.0.0rc1, \u003c 3.0.6\"}]}, {\"vendor\": \"pallets\", \"product\": \"Quart\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 0.20.0\"}]}], \"references\": [{\"url\": \"https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2\", \"name\": \"https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee\", \"name\": \"https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f\", \"name\": \"https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b\", \"name\": \"https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/pallets/werkzeug/releases/tag/3.0.6\", \"name\": \"https://github.com/pallets/werkzeug/releases/tag/3.0.6\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Werkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400: Uncontrolled Resource Consumption\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770: Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-05-20T22:24:47.608Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49767\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-20T22:24:47.608Z\", \"dateReserved\": \"2024-10-18T13:43:23.457Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-10-25T19:41:35.029Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.