CVE-2015-9096

Published: Jun 12, 2017Modified: May 13, 2026

6.1

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: NVD

Description

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.

Affected (1)

Products: Ruby Lang: Ruby

Ruby Lang

1 product

Ruby

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Ruby Lang Ruby	Up to 2.4.0

Related CWEs

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

References (12)

http://www.mbsd.jp/Whitepaper/smtpi.pdf

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/rubysec/ruby-advisory-db/issues/215

Source: cve@mitre.org

Issue TrackingThird Party Advisory

https://hackerone.com/reports/137631

Source: cve@mitre.org

Third Party Advisory

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

Source: cve@mitre.org

https://www.debian.org/security/2017/dsa-3966

Source: cve@mitre.org

http://www.mbsd.jp/Whitepaper/smtpi.pdf