Amazon Linux AMI update for golang

1) Improper access control

EUVDB-ID: #VU33632

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-5386

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The net/http package in Go through 1.6 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect CGI applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect a CGI application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue.

Mitigation

Update the affected packages:

i686:
    golang-bin-1.5.3-1.22.amzn1.i686
    golang-1.5.3-1.22.amzn1.i686

noarch:
    golang-docs-1.5.3-1.22.amzn1.noarch
    golang-src-1.5.3-1.22.amzn1.noarch
    golang-tests-1.5.3-1.22.amzn1.noarch
    golang-misc-1.5.3-1.22.amzn1.noarch

src:
    golang-1.5.3-1.22.amzn1.src

x86_64:
    golang-1.5.3-1.22.amzn1.x86_64
    golang-bin-1.5.3-1.22.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2016-731.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.