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Cleartext Transmission of Sensitive Information Affecting golang-1.8 package, versions *

Severity

 Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.28% (68th percentile)

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  • Snyk IDSNYK-DEBIAN9-GOLANG18-275331
  • published5 Oct 2017
  • disclosed5 Oct 2017
Report a new vulnerability Found a mistake?

Introduced: 5 Oct 2017

CVE-2017-15042  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

There is no fixed version for Debian:9 golang-1.8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-1.8 package and not the golang-1.8 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.