Time-of-check Time-of-use (TOCTOU) Race Condition Affecting curl package, versions [,8.2.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-UNMANAGED-CURL-5798510
  • published21 Jul 2023
  • disclosed19 Jul 2023
  • creditselmelc

Introduced: 19 Jul 2023

CVE-2023-32001  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

Upgrade curl to version 8.2.0 or higher.

Overview

curl is a command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP. libcurl offers a myriad of powerful features.

Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition. This race condition modifies the behavior of symbolic link files in affected components which might be followed instead of overwritten when the condition is met, leading to undesired and potentially destructive behavior.

Note:

This issue does not affect the Curl package as shipped in Red Hat Enterprise Linux 6, 7, 8, and 9.

CVSS Scores

version 3.1