External Control of File Name or Path Affecting flutter_curl package, versions *


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.1% (41st percentile)

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  • Snyk ID SNYK-PUB-FLUTTERCURL-5933312
  • published 5 Oct 2023
  • disclosed 5 Oct 2023
  • credit w0x42

How to fix?

There is no fixed version for flutter_curl.

Overview

Affected versions of this package are vulnerable to External Control of File Name or Path via the curl_easy_duphandle function, allowing an attacker to insert cookies into a running program using this library.

When this function is used to duplicate an easy handle with cookies enabled, the cookie-enable state is also cloned. However, the actual cookies are not cloned, and if the source handle did not read any cookies from a specific file on disk, the cloned handle would store the file name as none. Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would inadvertently load cookies from a file named none.

Note:

This is only exploitable if a file named none exists and is readable in the current directory of the program using libcurl and in the correct file format.

Changelog:

2023-10-04: Initial publication

2023-10-11: Published updated information, including CWE, CVSS, official references and affected versions range.

CVSS Scores

version 3.1
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Snyk

Recommended
3.7 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None
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NVD

3.7 low
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SUSE

4.5 medium
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Red Hat

3.7 low