Apple swift-corelibs-foundation crlf injection

Summaryinfo

A vulnerability was found in Apple swift-corelibs-foundation. It has been rated as problematic. This vulnerability affects unknown code. This manipulation causes crlf injection. The identification of this vulnerability is CVE-2022-3918. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in Apple swift-corelibs-foundation (version unknown). Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a crlf injection vulnerability. The CWE definition for the vulnerability is CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared 01/21/2023 as GHSA-4pp3-mpf2-rj63. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2022-3918 since 11/09/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-43253). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Apple

Name

• swift-corelibs-foundation

License

• commercial

Website

• Vendor: https://www.apple.com/
• Product: https://github.com/apple/swift-corelibs-foundation/

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Be aware that VulDB is the high quality source for vulnerability data.

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