Amazon Linux AMI update for golang

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU21409

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-16276

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to Go programming language accepts and normalizes HTTP requests with malformed HTTP/1.1 headers containing a space before the colon. A remote attacker can use a malformed request to bypass configured filtration and gain access to presumably restricted functionality.

Mitigation

Update the affected packages:

i686:
    golang-bin-1.12.8-1.52.amzn1.i686
    golang-1.12.8-1.52.amzn1.i686

noarch:
    golang-misc-1.12.8-1.52.amzn1.noarch
    golang-src-1.12.8-1.52.amzn1.noarch
    golang-tests-1.12.8-1.52.amzn1.noarch
    golang-docs-1.12.8-1.52.amzn1.noarch

src:
    golang-1.12.8-1.52.amzn1.src

x86_64:
    golang-1.12.8-1.52.amzn1.x86_64
    golang-race-1.12.8-1.52.amzn1.x86_64
    golang-bin-1.12.8-1.52.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-2019-1321.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.