Advisories ยป MGASA-2017-0486

Updated ruby packages fix security vulnerabilities

Publication date: 31 Dec 2017
Type: security
Affected Mageia releases : 5 , 6
CVE: CVE-2017-17405 , CVE-2017-17790


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

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses
Kernel#open, which might allow Command Injection attacks, as
demonstrated by a Resolv::Hosts::new argument beginning with a '|'
character (CVE-2017-17790).