CVE-2017-17790

Description

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, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

References

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://github.com/ruby/ruby/pull/1777

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

Details

Risk Information

CVSS v2

CVSS v3