External Control of File Name or Path Affecting libcurl-ct package, versions [0,]


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.12% (47th percentile)

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  • Snyk IDSNYK-PYTHON-LIBCURLCT-5933253
  • published5 Oct 2023
  • disclosed5 Oct 2023
  • creditw0x42

Introduced: 5 Oct 2023

CVE-2023-38546  (opens in a new tab)
CWE-73  (opens in a new tab)

How to fix?

There is no fixed version for libcurl-ct.

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