Vulnerability in Mail Project
CVE-2015-9097
The mail gem before 2.5.5 for Ruby (aka A Really Ruby Mail Library) 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.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.034 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/mikel/mail/pull/1097 (Third Party Advisory, Issue Tracking)
- hackerone.com/reports/137631 (Third Party Advisory, Issue Tracking)
- github.com/mikel/mail/commit/72befdc4dab3e6e288ce226a7da2aa474cf5be83 (Exploit, Third Party Advisory)
- openwall.com/lists/oss-security/2015/12/11/3 (Mailing List, Third Party Advisory)
- rubysec.com/advisories/mail-OSVDB-131677 (Issue Tracking, Vendor Advisory)
- github.com/rubysec/ruby-advisory-db/issues/215 (Third Party Advisory, Issue Tracking)
- www.mbsd.jp/Whitepaper/smtpi.pdf (Third Party Advisory)
Frequently asked questions
- What is CVE-2015-9097?
- CVE-2015-9097 is a medium-severity vulnerability in Mail Project, classified under CRLF Injection. CVSS score: 6.1/10. Published 2017-06-12.
- How severe is CVE-2015-9097?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2015-9097 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.