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Man-in-the-Middle (MitM) Affecting golang-src package, versions *

Severity

 Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.29% (69th percentile)

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  • Snyk ID SNYK-RHEL7-GOLANGSRC-5011699
  • published 26 Jul 2021
  • disclosed 4 Oct 2017
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Introduced: 4 Oct 2017

CVE-2017-15042 Open this link in a new tab
CWE-300 Open this link in a new tab

How to fix?

There is no fixed version for RHEL:7 golang-src.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-src package and not the golang-src package as distributed by RHEL. See How to fix? for RHEL:7 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.