I understand that you want some vulnerability scanning/auditing that is capable to find vulnerabilities on Go executables by inspecting it. I already read some articles that fit on keywords such as "golang vulnerable function" expecting to encountering some lack of security functions alike in C language that fight against stack overflow (i.g.,
sprintf, ...), memory adjacent overflow (i.g.,
strncat, ...) and on and on. However, I haven't found ways to discover flaws this way, but as you aforementioned on several CVE listed in CVEDetails, these known vulnerabilities are possible to detect using NIST National Vulnerability Database (usually used into an unauthenticated vulnerability scanning, that's why some vulnerability scanning can found some flaws without requires credentials - i.e., Nmap and Nessus) and you can also use the vulnerability auditing method such thing like Open Vulnerability Assessment Language (aka OVAL Language - An open and publicly available security content, and to standardize the transfer of this information across the entire spectrum of security tools and services.1 -, usually used in authenticated scanning [i.e., OpenSCAP]), namely, you can read about that and create your own "rules" to detect those known vulnerabilities.
Publicly information security vulnerabilities
There is an information vacuum in some of publicly known vulnerabilities database (i.e., NVDCVE and CVE) hence it is fairly biased to false negative (where there is insufficient information for scanning to be able to trigger the presence of vulnerability) and, rarely, it can also happen false positive alerts (which means that can report vulnerabilities that do not exist on the environment.) If you want to perform a vulnerability assessment upon the package information on the machine that you have access to, I encourage you to choose the OVAL Language as your partner on this journey.
Vulnerability Scanning and Vulnerability Auditing
Both are the focus on discovering system weaknesses, although you can't compare them, as each is different purposes. The vulnerability auditing (i.e., Lynis and SCAP) performs tests to determine how the system is well configured looking at in every corner as possible. The other method is the vulnerability scanning (i.e., Nessus and QualysGuard) that is performed to discover software flaws, detecting some running service or installed application, however, consequently, does several tests against them and reports their Result
Analysing a known vulnerability in GoLang
For example CVE-2018-6574:
If you go through "Scroll to -> OVAL Definitions" you'll see the "OVAL Definition ID" (
oval:com.redhat.rhsa:def:20180878), click it and scroll down to see a conditional structure that assesses the current and related vulnerability. If you want to know how to write a signature that makes vulnerability assessment on certain CVE, I recommend you read about Open Vulnerability Assessment Language (OVAL Language)2, mainly the OVAL Content Creation Tutorial3 article.
Despite all of these vulnerabilities listed on CVEDetails, that's not means that are publicly OVAL Definition for all of them, for instance, CVE-2018-71874. This vulnerability is in GoLang, version 1.9.4:
The "go get" implementation in Go 1.9.4, when the -insecure
command-line option is used, does not validate the import path
(get/vcs.go only checks for "://" anywhere in the string), which
allows remote attackers to execute arbitrary OS commands via a crafted
Publish Date : 2018-02-16 Last Update Date : 2018-03-13
According to the [CVE-2018-7187] CVEDetails information that I mentioned above, the operating system is Debian GNU/Linux 7, albeit you can validate it into whatsoever Linux-like operating system with. Whether you putting all information together that composes an OVAL signature:
OVAL Definitions: Means what you'll be checking for. The "OVAL Definitions" is the category that can be composed with multiples "Definition" class as well as the other categories described below;
- Criteria: This is a class that is associated with the OVAL Definitions category. The role of this class is a forward routine that corresponds to what you are currently assessing to the "Test";
OVAL Objects: This specifies the raw information that you expects to found. Usually, this topic contains the literal names (i.g., application, windows registry key, etc)
OVAL Test: This one performs a logical test to what is checking. Roughly, this guarantees at least the existence of n an item to trigger as true.
OVAL State: This specifies the information expected to be compared to the information collected.
Result: When the information expected (from OVAL State) is evaluated from the what is collected, the matchup value (being true or false) is stored to the OVAL Results as a report of the outcome assessment.
Note: Read the refer 3 for more information.
Detecting CVE-2018-7187 using OVAL Language:
You can make the vulnerability assessment depending on your target. For Windows, the OVALid5 can be as a stopgap, and on another hand, for Linux-like OS you can use OpenSCAP Base6.
In the following steps, I will describe a little about how you can build your own lab to make vulnerability assessment on any software applications into a Linux-like OS environment.
1. Create the lab:
The required package are:
autoconf automake libtool make libdbus-1-dev libdbus-glib-1-dev libcurl4-openssl-dev libgcrypt20-dev libselinux1-dev libxslt1-dev libgconf2-dev libacl1-dev libblkid-dev libcap-dev libxml2-dev libldap2-dev libpcre3-dev python-dev swig libxml-parser-perl libxml-xpath-perl libperl5.22 python-dev libbz2-dev librpm-dev swig
1.2. Compiling OpenSCAP
$ git clone https://github.com/OpenSCAP/openscap.git
$ cd openscap
$ ./autogen.sh && ./configure && make
Note: If you have some unpredictable installing error read this OpenSCAP Guide, Developer's operations7.
If you came across with linking error because not resolve "
rpmlogClose()" symbol, go to
src/OVAL/probes/Makefile and edit the line
2. Prepare the OVAL Language rule:
I have created the rule to detect CVE-2018-7187, tested on Ubuntu 18.04.1 LTS:
3. Use OpenSCAP to perform the vulnerability assessment:
On local machine:
$ oscap oval eval linux-definitions-vulnerability-oval.xml
Definition oval:com.stackexchange.security:def:666: true
On remote machine you can use
oscap-ssh with the follwing commandline:
$ oscap <user@domain> oval eval <oval_rule>
oscap-ssh, a bash script by mpreisler9:
$ bash oscap-ssh email@example.com 22 oval eval ~/PoC/linux-definitions-vulnerability-oval.xml
Connecting to 'firstname.lastname@example.org' on port '22'...
Copying input file '/home/slayer/PoC/linux-definitions-vulnerability-oval.xml' to remote working directory '/tmp/tmp.bh28nES8c9'...
linux-definitions-vulnerability-oval.xml 100% 3386 3.0MB/s 00:00
Starting the evaluation...
Definition oval:com.stackexchange.security:def:666: true
oscap exit code: 0
Copying back requested files...
Removing remote temporary directory...
Disconnecting ssh and removing master ssh socket directory...