CVE-2017-17405
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-17405.html
Vendor advisory: cve@mitre.org — https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-4-3-released/
Vendor advisory: cve@mitre.org — https://www.ruby-lang.org/en/news/2017/12/14/net-ftp-command-injection-cve-2017-17405/
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| rhel | 7.0 | affected | |
References
- 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/
- https://www.suse.com/security/cve/CVE-2017-17405.html
CWEs
CWE-78
Verify integrity in audit chain (admin only). AS-IS.