Improper Input Validation Affecting curl package, versions [0,7.34.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.25% (65th percentile)

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  • Snyk IDSNYK-UNMANAGED-CURL-2317546
  • published14 Dec 2021
  • disclosed23 Dec 2013
  • creditUnknown

Introduced: 23 Dec 2013

CVE-2013-6422  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade curl to version 7.34.0 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 Improper Input Validation. The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks.

References

CVSS Scores

version 3.1