CVE-2017-17405 Information

Description

Ruby before 2.4.3 allows Net::FTP command injection. Net::FTPget getbinaryfile gettextfile put putbinaryfile and puttextfile use Kernelopen to open a local file. If the localfile argument starts with the |\ pipe character the command following the pipe character is executed. The default value of localfile is File.basename(remotefile) so malicious FTP servers could cause arbitrary command execution.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/102204 http://www.securitytracker.com/id/1042004 https://access.redhat.com/errata/RHSA-2018:0378 https://access.redhat.com/errata/RHSA-2018:0583 https://access.redhat.com/errata/RHSA-2018:0584 https://access.redhat.com/errata/RHSA-2018:0585 https://access.redhat.com/errata/RHSA-2019:2806 https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html https://www.debian.org/security/2018/dsa-4259 https://www.exploit-db.com/exploits/43381/ https://www.ruby-lang.org/en/news/2017/12/14/net-ftp-command-injection-cve-2017-17405/ https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-4-3-released/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8