feat(netutils): An Alpine-based image having SSH and net utils - #183
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Signed-off-by: Simon Kuenzer <simon@unikraft.io>
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Update the following packages to fix security vulnerabilities: - Authlib 1.6.5 -> 1.6.9 (critical: JWS JWK Header Injection, high: alg:none bypass, Bleichenbacher, OIDC hash binding, medium: account takeover) - cryptography 46.0.3 -> 46.0.5 (high: SECT curve subgroup attack) - fastmcp 2.13.2 -> 2.14.5 (high: OAuth proxy token reuse, MCP CVE-2025-66416) - mcp 1.23.1 -> 1.26.0 (required by fastmcp 2.14.x) - PyJWT 2.10.1 -> 2.12.1 (high: unknown crit header extensions) - python-multipart 0.0.20 -> 0.0.22 (high: arbitrary file write) - urllib3 2.5.0 -> 2.6.3 (high: decompression bomb bypass, streaming API issues) Note: diskcache 5.6.3 has no fix available (alert #226). Resolves dependabot alerts #177, #178, #183, #189, #197, #208, #224, #274, #282, #290, #292, #294, #296. Signed-off-by: Razvan Deaconescu <razvand@unikraft.io>
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Update the following packages to fix security vulnerabilities: - Authlib 1.6.5 -> 1.6.9 (critical: JWS JWK Header Injection, high: alg:none bypass, Bleichenbacher, OIDC hash binding, medium: account takeover) - cryptography 46.0.3 -> 46.0.5 (high: SECT curve subgroup attack) - fastmcp 2.13.2 -> 2.14.5 (high: OAuth proxy token reuse, MCP CVE-2025-66416) - mcp 1.23.1 -> 1.26.0 (required by fastmcp 2.14.x) - PyJWT 2.10.1 -> 2.12.1 (high: unknown crit header extensions) - python-multipart 0.0.20 -> 0.0.22 (high: arbitrary file write) - urllib3 2.5.0 -> 2.6.3 (high: decompression bomb bypass, streaming API issues) Note: diskcache 5.6.3 has no fix available (alert #226). Resolves dependabot alerts #177, #178, #183, #189, #197, #208, #224, #274, #282, #290, #292, #294, #296. Signed-off-by: Razvan Deaconescu <razvand@unikraft.io>
dragosgheorghioiu
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Apr 7, 2026
Update the following packages to fix security vulnerabilities: - Authlib 1.6.5 -> 1.6.9 (critical: JWS JWK Header Injection, high: alg:none bypass, Bleichenbacher, OIDC hash binding, medium: account takeover) - cryptography 46.0.3 -> 46.0.5 (high: SECT curve subgroup attack) - fastmcp 2.13.2 -> 2.14.5 (high: OAuth proxy token reuse, MCP CVE-2025-66416) - mcp 1.23.1 -> 1.26.0 (required by fastmcp 2.14.x) - PyJWT 2.10.1 -> 2.12.1 (high: unknown crit header extensions) - python-multipart 0.0.20 -> 0.0.22 (high: arbitrary file write) - urllib3 2.5.0 -> 2.6.3 (high: decompression bomb bypass, streaming API issues) Note: diskcache 5.6.3 has no fix available (alert #226). Resolves dependabot alerts #177, #178, #183, #189, #197, #208, #224, #274, #282, #290, #292, #294, #296. Signed-off-by: Razvan Deaconescu <razvand@unikraft.io>
dragosgheorghioiu
pushed a commit
that referenced
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Apr 7, 2026
Update the following packages to fix security vulnerabilities: - Authlib 1.6.5 -> 1.6.9 (critical: JWS JWK Header Injection, high: alg:none bypass, Bleichenbacher, OIDC hash binding, medium: account takeover) - cryptography 46.0.3 -> 46.0.5 (high: SECT curve subgroup attack) - fastmcp 2.13.2 -> 2.14.5 (high: OAuth proxy token reuse, MCP CVE-2025-66416) - mcp 1.23.1 -> 1.26.0 (required by fastmcp 2.14.x) - PyJWT 2.10.1 -> 2.12.1 (high: unknown crit header extensions) - python-multipart 0.0.20 -> 0.0.22 (high: arbitrary file write) - urllib3 2.5.0 -> 2.6.3 (high: decompression bomb bypass, streaming API issues) Note: diskcache 5.6.3 has no fix available (alert #226). Resolves dependabot alerts #177, #178, #183, #189, #197, #208, #224, #274, #282, #290, #292, #294, #296. Signed-off-by: Razvan Deaconescu <razvand@unikraft.io>
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Pull request overview
Adds a new netutils example image intended for Unikraft Cloud, providing an Alpine-based userspace with an SSH server plus common networking/debugging utilities.
Changes:
- Introduces an Alpine-based
Dockerfilethat installs Dropbear SSH and essential net tools. - Adds a Dropbear entrypoint script (
dropbeard.sh) plus MOTD/profile customizations. - Adds a
Kraftfileand README documenting how to deploy and connect.
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 8 comments.
Show a summary per file
| File | Description |
|---|---|
| netutils/README.md | Deployment and SSH access instructions for the netutils example. |
| netutils/profile | Shell prompt customization for interactive sessions. |
| netutils/motd | MOTD banner and informational text shown on login. |
| netutils/Kraftfile | Unikraft Cloud runtime/rootfs wiring and instance labels. |
| netutils/dropbeard.sh | Entrypoint that optionally installs a provided public key and starts Dropbear. |
| netutils/Dockerfile | Builds the Alpine userspace with SSH + network utilities and copies runtime assets. |
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| tcpdump \ | ||
| iputils \ | ||
| traceroute \ | ||
| bind-tools \ | ||
| socat |
| bind-tools \ | ||
| socat | ||
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| RUN echo "root:unikraft" | chpasswd |
| if test -n "${PUBKEY}"; then | ||
| mkdir -p "${HOME}/.ssh" | ||
| chmod 700 "${HOME}/.ssh" | ||
| echo "${PUBKEY}" >> "${HOME}/.ssh/authorized_keys" |
| fi | ||
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| # Launch dropbear SSH server | ||
| exec /usr/sbin/dropbear -ERF |
| This is the netutils example image, its user space | ||
| is built on Alpine Linux: <https://wiki.alpinelinux.org/>. | ||
| For details about this image, visit: | ||
| <https://github.com/unikraft-cloud/examples/netutils>. |
| # Netutils Example image | ||
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| This image contains a minimal user space environment based on Alpine Linux. | ||
| A SSH server is launched and a couple of essential networking tools such as |
| @@ -0,0 +1,21 @@ | |||
| FROM alpine:latest | |||
| RUN echo "root:unikraft" | chpasswd | ||
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| COPY ./motd /etc/motd | ||
| COPY ./profile /etc/profile |
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The user space of this image is built on Alpine Linux: https://wiki.alpinelinux.org/, using busybox. It comes preloaded with essential networking tools such as
nslookup,ping,traceroute,ip,socat, andtcpdump. More packages can be installed withapkbut an eye should be kept on free RAM 馃槃 .