Golang: stdlib: security update to 1.8.4stdlib: security update to 1.9.1

medium Tenable Self-Hosted Container Security Plugin ID 428561

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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.
(CVE-2017-15042)

See Also

https://pkg.go.dev/vuln/GO-2021-0178

Plugin Details

Severity: Medium

ID: 428561

Version: Revision 1.2

Type: Local

Family: Golang

Published: 7/21/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2017-15042

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/7/2022

Vulnerability Publication Date: 10/4/2017

Reference Information

CVE: CVE-2017-15042

BID: 101197