[RHSA-2016:1538-01] Moderate: golang security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: golang security, bug fix, and enhancement update

Advisory ID: RHSA-2016:1538-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1538.html

Issue date: 2016-08-02

CVE Names: CVE-2016-5386

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1. Summary:

 

An update for golang is now available for Red Hat Enterprise Linux 7.

 

Red Hat Product Security has rated this update as having a security impact

of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which

gives a detailed severity rating, is available for each vulnerability from

the CVE link(s) in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, x86_64

 

3. Description:

 

The golang packages provide the Go programming language compiler.

 

The following packages have been upgraded to a newer upstream version:

golang (1.6.3). (BZ#1346331)

 

Security Fix(es):

 

* An input-validation flaw was discovered in the Go programming language

built in CGI implementation, which set the environment variable

"HTTP_PROXY" using the incoming "Proxy" HTTP-request header. The

environment variable "HTTP_PROXY" is used by numerous web clients,

including Go's net/http package, to specify a proxy server to use for HTTP

and, in some cases, HTTPS requests. This meant that when a CGI-based web

application ran, an attacker could specify a proxy server which the

application then used for subsequent outgoing requests, allowing a

man-in-the-middle attack. (CVE-2016-5386)

 

Red Hat would like to thank Scott Geary (VendHQ) for reporting this issue.

 

4. Solution:

 

For details on how to apply this update, which includes the changes

described in this advisory, refer to:

 

https://access.redhat.com/articles/11258

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1346331 - REBASE to golang 1.6

1353798 - CVE-2016-5386 Go: sets environmental variable based on user supplied Proxy request header

 

6. Package List:

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

Source:

golang-1.6.3-1.el7_2.1.src.rpm

 

noarch:

golang-docs-1.6.3-1.el7_2.1.noarch.rpm

golang-misc-1.6.3-1.el7_2.1.noarch.rpm

golang-src-1.6.3-1.el7_2.1.noarch.rpm

golang-tests-1.6.3-1.el7_2.1.noarch.rpm

 

x86_64:

golang-1.6.3-1.el7_2.1.x86_64.rpm

golang-bin-1.6.3-1.el7_2.1.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2016-5386

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2016 Red Hat, Inc.

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