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.

CVSS v3.0 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3.0 : MEDIUM

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://groups.google.com/d/msg/golang-dev/RinSE3EiJBI/kYL7zb07AgAJ	Mailing List Vendor Advisory
https://golang.org/cl/68210	Vendor Advisory
https://golang.org/cl/68023	Issue Tracking Patch Vendor Advisory
https://github.com/golang/go/issues/22134	Issue Tracking Patch Vendor Advisory
http://www.securityfocus.com/bid/101197	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201710-23	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3463
https://access.redhat.com/errata/RHSA-2018:0878

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go:1.9:::::::*
	cpe:2.3:a:golang:go::::::::

Information

Published : 2017-10-05 14:29

Updated : 2019-10-02 17:03

NVD link : CVE-2017-15042

Mitre link : CVE-2017-15042

JSON object : View

CWE

CWE-319

Cleartext Transmission of Sensitive Information

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Products Affected

golang

go

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