National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-15042 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.8.3
 cpe:2.3:a:golang:go:1.9:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-15042
NVD Published Date:
10/05/2017
NVD Last Modified:
04/11/2018