For record these vulnerabilities got assigned CVE-2017-15041 and CVE-2017-15042. Any packages using the affected component "net/smtp" needs to be rebuild with the fixed version of Go, in order to pick up the fix.
Updates has been submitted in to Fedora 26,27,Rawhide(they are not in build root-override) also I'm considering backport to f25(go1.7).
karma is as always welcomed :),
Upstream release notes follow.
----- Forwarded Message -----
From: "Chris Broadfoot" <cbro(a)golang.org>
To: "golang-nuts" <golang-nuts(a)googlegroups.com>
Sent: Wednesday, October 4, 2017 10:33:32 PM
Subject: [golang-dev] [security] Go 1.8.4 and Go 1.9.1 are released
Two security-related issues were recently reported.
To address this issue, we have just released Go 1.8.4 and Go 1.9.1.
We recommend that all users update to one of these releases (if you're not
sure which, choose Go 1.9.1).
The issues addressed by these releases are:
By nesting a git checkout inside another version control repository, it was
possible for an attacker to trick the “go get” command into executing
arbitrary code. The go command now refuses to use version control checkouts
found inside other version control systems, with an exception for git
submodules (git inside git).
The issue is tracked as https://golang.org/issue/22125 (Go 1.8.4) and
https://golang.org/issue/22131 (Go 1.9.1). Fixes are linked from the issues.
Thanks to Simon Rawet for the report.
In the smtp package, PlainAuth is documented as sending credentials only
over authenticated, encrypted TLS connections, but it was changed in Go 1.1
to also send credentials on non-TLS connections when the remote server
advertises that PLAIN authentication is supported. The change was meant to
allow use of PLAIN authentication on localhost, but it has the effect of
allowing a man-in-the-middle attacker to harvest credentials. PlainAuth now
requires either TLS or a localhost connection before sending credentials,
regardless of what the remote server claims.
This issue is tracked as https://golang.org/issue/22134 (Go 1.8.4) and
https://golang.org/issue/22133 (Go 1.9.1). Fixes are linked from the issues.
Thanks to Stevie Johnstone for the report.
Downloads are available at https://golang.org/dl for all supported
Chris (on behalf of the Go team)
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