Improper Certificate Validation Affecting curl package, versions [7.30.0,7.52.0)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.18% (56th percentile)

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  • Snyk IDSNYK-UNMANAGED-CURL-2317503
  • published14 Dec 2021
  • disclosed12 Mar 2018
  • creditUnknown

Introduced: 12 Mar 2018

CVE-2016-9952  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade curl to version 7.52.0 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 Certificate Validation. The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."

CVSS Scores

version 3.1