Rootfs
Scan a root filesystem (such as a host machine, a virtual machine image, or an unpacked container image filesystem).
$ trivy rootfs /path/to/rootfs
Standalone mode
From Inside Containers
Scan your container from inside the container.
$ docker run --rm -it alpine:3.11
/ # curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin
/ # trivy rootfs /
Result
2021-03-08T05:22:26.378Z INFO Need to update DB
2021-03-08T05:22:26.380Z INFO Downloading DB...
20.37 MiB / 20.37 MiB [-------------------------------------------------------------------------------------------------------------------------------------] 100.00% 8.24 MiB p/s 2s
2021-03-08T05:22:30.134Z INFO Detecting Alpine vulnerabilities...
2021-03-08T05:22:30.138Z INFO Trivy skips scanning programming language libraries because no supported file was detected
313430f09696 (alpine 3.11.7)
============================
Total: 6 (UNKNOWN: 0, LOW: 0, MEDIUM: 0, HIGH: 6, CRITICAL: 0)
+--------------+------------------+----------+-------------------+---------------+---------------------------------------+
| LIBRARY | VULNERABILITY ID | SEVERITY | INSTALLED VERSION | FIXED VERSION | TITLE |
+--------------+------------------+----------+-------------------+---------------+---------------------------------------+
| libcrypto1.1 | CVE-2021-23839 | HIGH | 1.1.1i-r0 | 1.1.1j-r0 | openssl: incorrect SSLv2 |
| | | | | | rollback protection |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23839 |
+ +------------------+ + + +---------------------------------------+
| | CVE-2021-23840 | | | | openssl: integer |
| | | | | | overflow in CipherUpdate |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23840 |
+ +------------------+ + + +---------------------------------------+
| | CVE-2021-23841 | | | | openssl: NULL pointer dereference |
| | | | | | in X509_issuer_and_serial_hash() |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23841 |
+--------------+------------------+ + + +---------------------------------------+
| libssl1.1 | CVE-2021-23839 | | | | openssl: incorrect SSLv2 |
| | | | | | rollback protection |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23839 |
+ +------------------+ + + +---------------------------------------+
| | CVE-2021-23840 | | | | openssl: integer |
| | | | | | overflow in CipherUpdate |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23840 |
+ +------------------+ + + +---------------------------------------+
| | CVE-2021-23841 | | | | openssl: NULL pointer dereference |
| | | | | | in X509_issuer_and_serial_hash() |
| | | | | | -->avd.aquasec.com/nvd/cve-2021-23841 |
+--------------+------------------+----------+-------------------+---------------+---------------------------------------+
Client/Server mode
You must launch Trivy server in advance.
$ trivy server
Then, Trivy works as a client if you specify the --server option.
$ trivy rootfs --server http://localhost:4954 --severity CRITICAL /tmp/rootfs
Result
/tmp/rootfs (alpine 3.10.2)
Total: 1 (CRITICAL: 1)
┌───────────┬────────────────┬──────────┬───────────────────┬───────────────┬─────────────────────────────────────────────────────────────┐
│ Library │ Vulnerability │ Severity │ Installed Version │ Fixed Version │ Title │
├───────────┼────────────────┼──────────┼───────────────────┼───────────────┼─────────────────────────────────────────────────────────────┤
│ apk-tools │ CVE-2021-36159 │ CRITICAL │ 2.10.4-r2 │ 2.10.7-r0 │ libfetch before 2021-07-26, as used in apk-tools, xbps, and │
│ │ │ │ │ │ other products, mishandles... │
│ │ │ │ │ │ https://avd.aquasec.com/nvd/cve-2021-36159 │
└───────────┴────────────────┴──────────┴───────────────────┴───────────────┴─────────────────────────────────────────────────────────────┘