CVE-2023-29406 Insufficient sanitization of Host header in net/http
Medium 6.5
Published
Updated
Check this codebase for CVE-2023-29406 and fix it if it is affected.
What it is: CVE-2023-29406 is a medium-severity vulnerability in Golang Go, published on 11 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-29406 in the wild and no public exploit code.
Affected packages and fixed versions:
- golang (Bitnami): affected all versions; fixed in 1.19.11, 1.20.6
- stdlib (Go): affected all versions; fixed in 1.19.11, 1.20.6
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2023-29406/ (Markdown: https://insights.sbomify.com/CVE-2023-29406/index.md)
A malicious Host header in Go's net/http client can inject headers or requests, requiring an upgrade to the Go standard library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-29406?
CVE-2023-29406 is a medium-severity vulnerability in Golang Go, published on 11 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.
Weakness: CWE-436
Which versions are affected by CVE-2023-29406?
2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.19.11, 1.20.6 |
stdlib Go | All versions | 1.19.11, 1.20.6 |
Linux distribution packages (38)
aardvark-dns AlmaLinux:8 | All versions | 2:1.0.1-38.module_el8.9.0+3627+db8ec155 |
buildah AlmaLinux:8 | All versions | 1:1.24.6-7.module_el8.9.0+3627+db8ec155 |
buildah AlmaLinux:8 | All versions | 1:1.24.6-7.module_el8.9.0+3687+dcd7ef8f |
buildah-tests AlmaLinux:8 | All versions | 1:1.24.6-7.module_el8.9.0+3627+db8ec155 |
buildah-tests AlmaLinux:8 | All versions | 1:1.24.6-7.module_el8.9.0+3687+dcd7ef8f |
cockpit-podman AlmaLinux:8 | All versions | 46-1.module_el8.7.0+3344+5bcd850f |
conmon AlmaLinux:8 | All versions | 2:2.1.4-2.module_el8.9.0+3627+db8ec155 |
conmon AlmaLinux:8 | All versions | 2:2.1.4-2.module_el8.9.0+3687+dcd7ef8f |
container-selinux AlmaLinux:8 | All versions | 2:2.205.0-3.module_el8.9.0+3687+dcd7ef8f |
containernetworking-plugins AlmaLinux:8 | All versions | 1:1.1.1-5.module_el8.9.0+3627+db8ec155 |
containernetworking-plugins AlmaLinux:8 | All versions | 1:1.1.1-5.module_el8.9.0+3687+dcd7ef8f |
containers-common AlmaLinux:8 | All versions | 2:1-38.module_el8.9.0+3627+db8ec155 |
crit AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+2877+8e437bf5 |
crit AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+3137+d33c3efb |
criu AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+2877+8e437bf5 |
criu AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+3137+d33c3efb |
criu-devel AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+2877+8e437bf5 |
criu-devel AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+3137+d33c3efb |
criu-libs AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+2877+8e437bf5 |
criu-libs AlmaLinux:8 | All versions | 3.15-3.module_el8.6.0+3137+d33c3efb |
crun AlmaLinux:8 | All versions | 1.8.7-1.module_el8.9.0+3683+33eb0feb |
fuse-overlayfs AlmaLinux:8 | All versions | 1.9-2.module_el8.9.0+3627+db8ec155 |
fuse-overlayfs AlmaLinux:8 | All versions | 1.9-2.module_el8.9.0+3687+dcd7ef8f |
libslirp AlmaLinux:8 | All versions | 4.4.0-1.module_el8.6.0+2877+8e437bf5 |
libslirp AlmaLinux:8 | All versions | 4.4.0-1.module_el8.6.0+3137+d33c3efb |
libslirp-devel AlmaLinux:8 | All versions | 4.4.0-1.module_el8.6.0+2877+8e437bf5 |
libslirp-devel AlmaLinux:8 | All versions | 4.4.0-1.module_el8.6.0+3137+d33c3efb |
netavark AlmaLinux:8 | All versions | 2:1.0.1-38.module_el8.9.0+3627+db8ec155 |
oci-seccomp-bpf-hook AlmaLinux:8 | All versions | 1.2.5-2.module_el8.8.0+3468+16b86c82 |
podman AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
podman AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3687+dcd7ef8f |
podman-catatonit AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
podman-catatonit AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3687+dcd7ef8f |
podman-docker AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
podman-gvproxy AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
podman-gvproxy AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3687+dcd7ef8f |
podman-plugins AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
podman-remote AlmaLinux:8 | All versions | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 |
Products include Golang Go.
How do I fix CVE-2023-29406?
Upgrade golang to a fixed version for your release line: 1.19.11 or 1.20.6.
Is CVE-2023-29406 being exploited?
There is no known exploitation of CVE-2023-29406 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
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Sources
Also known as ALSA-2023:7202, AZL-27410, AZL-28831, AZL-37418, AZL-37420, AZL-52711 and 24 more.