This is a simple python script which gets a list of all docker swarm services and runs every container image found through Aquasecurity's excellent Trivy security scanner. Note: The script needs access to the docker socket, so make sure to scan through the code to make sure you trust it.
First off, build the image that will run the script :
docker build -t trivitall:some-tag .And on a swarm master run the image :
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock trivitall:some-tagThat should produce output like this for any images found to have critial security warnings :
Image nginx:latest has CRITICAL vulnarabilities. Used in service(s) {'my-web-app'}
You can control the verbosity of the output and what security level you want to report on using environment variables :
docker run -e TRIV_VERBOSE=1 -e TRIV_LEVEL=MEDIUM,HIGH,CRITICAL --rm -v /var/run/docker.sock:/var/run/docker.sock trivitall:some-tagThe TRIV_LEVEL option can be any of UNKNOWN,LOW,MEDIUM,HIGH,CRITICAL with the default being CRITICAL. The TRIV_VERBOSE option will give you a lot more output :
Scanning the following images : {'minio/minio:RELEASE.2019-08-21T19-40-07Z', 'nginx:latest'}
Image minio/minio:RELEASE.2019-08-21T19-40-07Z has no vulnarabilties
Image nginx:latest has CRITICAL vulnarabilities. Used in service(s) {'freddy'}
###### Output from trivy scan of nginx:latest ######
b"2020-03-14T15:22:24.109Z\t\x1b[33mWARN\x1b[0m\tYou should avoid using the :latest tag as it is cached. You need to specify '--clear-cache' option when :latest image is changed"
b'2020-03-14T15:22:30.957Z\t\x1b[34mINFO\x1b[0m\tDetecting Debian vulnerabilities...'
b''
b'nginx:latest (debian 10.1)'
b'=========================='
b'Total: 2 (UNKNOWN: 0, LOW: 0, MEDIUM: 0, HIGH: 0, CRITICAL: 2)'
b''
b'+-----------------+------------------+----------+-------------------+---------------+--------------------------------+'
b'| LIBRARY | VULNERABILITY ID | SEVERITY | INSTALLED VERSION | FIXED VERSION | TITLE |'
b'+-----------------+------------------+----------+-------------------+---------------+--------------------------------+'
b'| libjpeg62-turbo | CVE-2019-2201 | CRITICAL | 1:1.5.2-2 | | libjpeg-turbo: several integer |'
b'| | | | | | overflows and subsequent |'
b'| | | | | | segfaults when attempting |'
b'| | | | | | to compress/decompress |'
b'| | | | | | gigapixel... |'
b'+-----------------+------------------+ +-------------------+---------------+--------------------------------+'
b'| tar | CVE-2005-2541 | | 1.30+dfsg-6 | | Tar 1.15.1 does not properly |'
b'| | | | | | warn the user when extracting |'
b'| | | | | | setuid or... |'
b'+-----------------+------------------+----------+-------------------+---------------+--------------------------------+'
###### End of output from trivy scan of nginx:latest ######
The script will exit with 0 if there were no issues found, 1 if there were any and 2 if something unexpected happened.
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