CVE-2015-9096

moderate-risk
Published 2017-06-12

Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Ruby-Lang

References (12)

Exploit http://www.mbsd.jp/Whitepaper/smtpi.pdf
Patch https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee
Issue Tracking https://github.com/rubysec/ruby-advisory-db/issues/215
Third Party Advisory https://hackerone.com/reports/137631
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://www.debian.org/security/2017/dsa-3966
Exploit http://www.mbsd.jp/Whitepaper/smtpi.pdf
Patch https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee
Issue Tracking https://github.com/rubysec/ruby-advisory-db/issues/215
Third Party Advisory https://hackerone.com/reports/137631
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://www.debian.org/security/2017/dsa-3966
32
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 4/34 · Minimal
Exposure 5/34 · Minimal