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OS Command Injection Affecting ruby2.3 package, versions <2.3.1-2~16.04.4

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
89.5% (99th percentile)

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  • Snyk IDSNYK-UBUNTU1604-RUBY23-308561
  • published15 Dec 2017
  • disclosed15 Dec 2017
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Introduced: 15 Dec 2017

CVE-2017-17405  (opens in a new tab)
CWE-78  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 ruby2.3 to version 2.3.1-2~16.04.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.3 package and not the ruby2.3 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

Ruby before 2.4.3 allows Net::FTP command injection. Net::FTP#get, getbinaryfile, gettextfile, put, putbinaryfile, and puttextfile use Kernel#open 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.

References