Information Exposure Affecting curl package, versions [0,7.55.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.24% (64th percentile)

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  • Snyk IDSNYK-UNMANAGED-CURL-2317531
  • published14 Dec 2021
  • disclosed5 Oct 2017
  • creditUnknown

Introduced: 5 Oct 2017

CVE-2017-1000099  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade curl to version 7.55.0 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 Information Exposure. When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory.

References

CVSS Scores

version 3.1