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Vulnerability Details CVE-2017-15042

An unintended cleartext issue exists in Go before 1.8.4 and 1.9.x before 1.9.1. RFC 4954 requires that, during SMTP, the PLAIN auth scheme must only be used on network connections secured with TLS. The original implementation of smtp.PlainAuth in Go 1.0 enforced this requirement, and it was documented to do so. In 2013, upstream issue #5184, this was changed so that the server may decide whether PLAIN is acceptable. The result is that if you set up a man-in-the-middle SMTP server that doesn't advertise STARTTLS and does advertise that PLAIN auth is OK, the smtp.PlainAuth implementation sends the username and password.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 36.7%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
Products affected by CVE-2017-15042
  • Golang » Go » Version: N/A
    cpe:2.3:a:golang:go:-
  • Golang » Go » Version: 0.0.0-20201203163018-be400aefbc4c
    cpe:2.3:a:golang:go:0.0.0-20201203163018-be400aefbc4c
  • Golang » Go » Version: 1.0
    cpe:2.3:a:golang:go:1.0
  • Golang » Go » Version: 1.0.1
    cpe:2.3:a:golang:go:1.0.1
  • Golang » Go » Version: 1.0.2
    cpe:2.3:a:golang:go:1.0.2
  • Golang » Go » Version: 1.0.3
    cpe:2.3:a:golang:go:1.0.3
  • Golang » Go » Version: 1.1
    cpe:2.3:a:golang:go:1.1
  • Golang » Go » Version: 1.1.1
    cpe:2.3:a:golang:go:1.1.1
  • Golang » Go » Version: 1.1.2
    cpe:2.3:a:golang:go:1.1.2
  • Golang » Go » Version: 1.2
    cpe:2.3:a:golang:go:1.2
  • Golang » Go » Version: 1.2.1
    cpe:2.3:a:golang:go:1.2.1
  • Golang » Go » Version: 1.2.2
    cpe:2.3:a:golang:go:1.2.2
  • Golang » Go » Version: 1.3
    cpe:2.3:a:golang:go:1.3
  • Golang » Go » Version: 1.3.1
    cpe:2.3:a:golang:go:1.3.1
  • Golang » Go » Version: 1.3.2
    cpe:2.3:a:golang:go:1.3.2
  • Golang » Go » Version: 1.3.3
    cpe:2.3:a:golang:go:1.3.3
  • Golang » Go » Version: 1.4
    cpe:2.3:a:golang:go:1.4
  • Golang » Go » Version: 1.4.1
    cpe:2.3:a:golang:go:1.4.1
  • Golang » Go » Version: 1.4.2
    cpe:2.3:a:golang:go:1.4.2
  • Golang » Go » Version: 1.4.3
    cpe:2.3:a:golang:go:1.4.3
  • Golang » Go » Version: 1.5
    cpe:2.3:a:golang:go:1.5
  • Golang » Go » Version: 1.5.1
    cpe:2.3:a:golang:go:1.5.1
  • Golang » Go » Version: 1.5.2
    cpe:2.3:a:golang:go:1.5.2
  • Golang » Go » Version: 1.5.3
    cpe:2.3:a:golang:go:1.5.3
  • Golang » Go » Version: 1.5.4
    cpe:2.3:a:golang:go:1.5.4
  • Golang » Go » Version: 1.6
    cpe:2.3:a:golang:go:1.6
  • Golang » Go » Version: 1.6.1
    cpe:2.3:a:golang:go:1.6.1
  • Golang » Go » Version: 1.6.2
    cpe:2.3:a:golang:go:1.6.2
  • Golang » Go » Version: 1.6.3
    cpe:2.3:a:golang:go:1.6.3
  • Golang » Go » Version: 1.6.4
    cpe:2.3:a:golang:go:1.6.4
  • Golang » Go » Version: 1.7
    cpe:2.3:a:golang:go:1.7
  • Golang » Go » Version: 1.7.1
    cpe:2.3:a:golang:go:1.7.1
  • Golang » Go » Version: 1.7.2
    cpe:2.3:a:golang:go:1.7.2
  • Golang » Go » Version: 1.7.3
    cpe:2.3:a:golang:go:1.7.3
  • Golang » Go » Version: 1.7.4
    cpe:2.3:a:golang:go:1.7.4
  • Golang » Go » Version: 1.7.5
    cpe:2.3:a:golang:go:1.7.5
  • Golang » Go » Version: 1.7.6
    cpe:2.3:a:golang:go:1.7.6
  • Golang » Go » Version: 1.8
    cpe:2.3:a:golang:go:1.8
  • Golang » Go » Version: 1.8.1
    cpe:2.3:a:golang:go:1.8.1
  • Golang » Go » Version: 1.8.2
    cpe:2.3:a:golang:go:1.8.2
  • Golang » Go » Version: 1.8.3
    cpe:2.3:a:golang:go:1.8.3
  • Golang » Go » Version: 1.9
    cpe:2.3:a:golang:go:1.9


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