github - ghsa-9f7g-gqwh-jpf5

ghsa-9f7g-gqwh-jpf5

Vulnerability from github

Published

2023-04-06 18:30

Modified

2023-04-17 18:30

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed, leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3. ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage collector. The combination of these factors can permit an attacker to cause an program that parses multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service. This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix, ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxheaders=.

Show details on source website

JSON

To clipboard

{
"affected": [],
"aliases": [
"CVE-2023-24536"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-06T16:15:00Z",
"severity": "HIGH"
},
"details": "Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed, leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3. ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage collector. The combination of these factors can permit an attacker to cause an program that parses multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service. This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix, ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxheaders=.",
"id": "GHSA-9f7g-gqwh-jpf5",
"modified": "2023-04-17T18:30:29Z",
"published": "2023-04-06T18:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-24536"
},
{
"type": "WEB",
"url": "https://go.dev/cl/482075"
},
{
"type": "WEB",
"url": "https://go.dev/cl/482076"
},
{
"type": "WEB",
"url": "https://go.dev/cl/482077"
},
{
"type": "WEB",
"url": "https://go.dev/issue/59153"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2023-1705"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202311-09"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230526-0007"
}
],
"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"
}
]
}

cve-2023-24536

Vulnerability from cvelistv5

Published

2023-04-06 15:50

Modified

2024-08-02 11:03

Severity ?

Summary

Excessive resource consumption in net/http, net/textproto and mime/multipart

References

▼	URL	Tags
	https://go.dev/issue/59153
	https://go.dev/cl/482076
	https://go.dev/cl/482075
	https://go.dev/cl/482077
	https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8
	https://pkg.go.dev/vuln/GO-2023-1705
	https://security.netapp.com/advisory/ntap-20230526-0007/
	https://security.gentoo.org/glsa/202311-09

Impacted products

▼	Vendor	Product
	Go standard library	mime/multipart
	Go standard library	net/textproto

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:03:17.787Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/issue/59153"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/cl/482076"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/cl/482075"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/cl/482077"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/vuln/GO-2023-1705"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230526-0007/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202311-09"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "mime/multipart",
          "product": "mime/multipart",
          "programRoutines": [
            {
              "name": "Reader.readForm"
            },
            {
              "name": "mimeHeaderSize"
            },
            {
              "name": "newPart"
            },
            {
              "name": "Part.populateHeaders"
            },
            {
              "name": "Reader.NextPart"
            },
            {
              "name": "Reader.NextRawPart"
            },
            {
              "name": "Reader.nextPart"
            },
            {
              "name": "readMIMEHeader"
            },
            {
              "name": "Reader.ReadForm"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.19.8",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.20.3",
              "status": "affected",
              "version": "1.20.0-0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "net/textproto",
          "product": "net/textproto",
          "programRoutines": [
            {
              "name": "readMIMEHeader"
            },
            {
              "name": "Reader.ReadMIMEHeader"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.19.8",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.20.3",
              "status": "affected",
              "version": "1.20.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakob Ackermann (@das7pad)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed, leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3. ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage collector. The combination of these factors can permit an attacker to cause an program that parses multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service. This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix, ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxheaders=."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-06-12T19:14:05.111Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/59153"
        },
        {
          "url": "https://go.dev/cl/482076"
        },
        {
          "url": "https://go.dev/cl/482075"
        },
        {
          "url": "https://go.dev/cl/482077"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2023-1705"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20230526-0007/"
        },
        {
          "url": "https://security.gentoo.org/glsa/202311-09"
        }
      ],
      "title": "Excessive resource consumption in net/http, net/textproto and mime/multipart"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2023-24536",
    "datePublished": "2023-04-06T15:50:24.879Z",
    "dateReserved": "2023-01-25T21:19:20.642Z",
    "dateUpdated": "2024-08-02T11:03:17.787Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted