Detections
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Amazon Linux AMI : golang (ALAS-2017-918)
critical Nessus Plugin ID 104392
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
Arbitrary code execution during go get or go get -d :Go before 1.8.4 and 1.9.x before 1.9.1 allows 'go get' remote command execution. Using custom domains, it is possible to arrange things so that example.com/pkg1 points to a Subversion repository but example.com/pkg1/pkg2 points to a Git repository. If the Subversion repository includes a Git checkout in its pkg2 directory and some other work is done to ensure the proper ordering of operations, 'go get' can be tricked into reusing this Git checkout for the fetch of code from pkg2. If the Subversion repository's Git checkout has malicious commands in .git/hooks/, they will execute on the system running 'go get.' (CVE-2017-15041)
smtp.PlainAuth susceptible to man-in-the-middle password harvesting
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)
Solution
Run 'yum update golang' to update your system.See Also
Plugin Details
Severity: Critical
ID: 104392
File Name: ala_ALAS-2017-918.nasl
Version: 3.3
Type: local
Agent: unix
Published: 11/6/2017
Updated: 4/18/2018
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:golang-bin, p-cpe:/a:amazon:linux:golang-src, p-cpe:/a:amazon:linux:golang-race, p-cpe:/a:amazon:linux:golang-tests, p-cpe:/a:amazon:linux:golang, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:golang-docs, p-cpe:/a:amazon:linux:golang-misc
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Patch Publication Date: 11/2/2017
Reference Information
CVE: CVE-2017-15041, CVE-2017-15042
ALAS: 2017-918