variot - var-202301-1573

VAR-202301-1573

Vulnerability from variot - Updated: 2023-12-18 11:55

A program using FoundationNetworking in swift-corelibs-foundation is potentially vulnerable to CRLF ( ) injection in URLRequest headers. In this vulnerability, a client can insert one or several CRLF sequences into a URLRequest header value. When that request is sent via URLSession to an HTTP server, the server may interpret the content after the CRLF as extra headers, or even a second request. For example, consider a URLRequest to http://example.com/ with the GET method. Suppose we set the URLRequest header "Foo" to the value "Bar Extra-Header: Added GET /other HTTP/1.1". When this request is sent, it will appear to the server as two requests: GET / HTTP/1.1 Foo: Bar Extra-Header: Added GET /other HTTP/1.1 In this manner, the client is able to inject extra headers and craft an entirely new request to a separate path, despite only making one API call in URLSession. If a developer has total control over the request and its headers, this vulnerability may not pose a threat. However, this vulnerability escalates if un-sanitized user input is placed in header values. If so, a malicious user could inject new headers or requests to an intermediary or backend server. Developers should be especially careful to sanitize user input in this case, or upgrade their version of swift-corelibs-foundation to include the patch below. Swift Foundation There is an injection vulnerability in.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. However,..

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CVE-2022-3918 (GCVE-0-2022-3918)

Vulnerability from cvelistv5 – Published: 2023-01-20 00:00 – Updated: 2025-04-02 16:07

Summary

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE 113: Improper Neutralization of CRLF Sequences in HTTP Headers

Assigner

Swift

References

URL

Tags

https://github.com/apple/swift-corelibs-foundatio…

Impacted products

	Vendor	Product	Version
	Swift Project	Swift Foundation	Affected: unspecified , ≤ 5.7.2 (custom)

Show details on NVD website

JSON

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    "cna": {
      "affected": [
        {
          "product": "Swift Foundation",
          "vendor": "Swift Project",
          "versions": [
            {
              "lessThanOrEqual": "5.7.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A program using FoundationNetworking in swift-corelibs-foundation is potentially vulnerable to CRLF ( ) injection in URLRequest headers. In this vulnerability, a client can insert one or several CRLF sequences into a URLRequest header value. When that request is sent via URLSession to an HTTP server, the server may interpret the content after the CRLF as extra headers, or even a second request. For example, consider a URLRequest to http://example.com/ with the GET method. Suppose we set the URLRequest header \"Foo\" to the value \"Bar Extra-Header: Added GET /other HTTP/1.1\". When this request is sent, it will appear to the server as two requests: GET / HTTP/1.1 Foo: Bar Extra-Header: Added GET /other HTTP/1.1 In this manner, the client is able to inject extra headers and craft an entirely new request to a separate path, despite only making one API call in URLSession. If a developer has total control over the request and its headers, this vulnerability may not pose a threat. However, this vulnerability escalates if un-sanitized user input is placed in header values. If so, a malicious user could inject new headers or requests to an intermediary or backend server. Developers should be especially careful to sanitize user input in this case, or upgrade their version of swift-corelibs-foundation to include the patch below."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE 113: Improper Neutralization of CRLF Sequences in HTTP Headers",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-20T00:00:00.000Z",
        "orgId": "e4a1ddda-f4f5-496e-96c8-82c37d06abd0",
        "shortName": "Swift"
      },
      "references": [
        {
          "url": "https://github.com/apple/swift-corelibs-foundation/security/advisories/GHSA-4pp3-mpf2-rj63"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "e4a1ddda-f4f5-496e-96c8-82c37d06abd0",
    "assignerShortName": "Swift",
    "cveId": "CVE-2022-3918",
    "datePublished": "2023-01-20T00:00:00.000Z",
    "dateReserved": "2022-11-09T00:00:00.000Z",
    "dateUpdated": "2025-04-02T16:07:17.733Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

VAR-202301-1573

CVE-2022-3918 (GCVE-0-2022-3918)

Tags

Sightings

Nomenclature