CVE-2024-34156 Stack exhaustion in Decoder.Decode in encoding/gob
High 7.5
Published
Updated
Check this codebase for CVE-2024-34156 and fix it if it is affected.
What it is: CVE-2024-34156 is a high-severity denial of service vulnerability in encoding/gob, published on 6 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-34156 in the wild and no public exploit code.
Affected packages and fixed versions:
- golang (Bitnami): affected all versions; fixed in 1.22.7, 1.23.1
- stdlib (Go): affected all versions; fixed in 1.22.7, 1.23.1
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-2024-34156/ (Markdown: https://insights.sbomify.com/CVE-2024-34156/index.md)
Attackers can cause a panic and denial of service by sending deeply nested structures to the Go encoding/gob decoder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-34156?
CVE-2024-34156 is a high-severity denial of service vulnerability in encoding/gob, published on 6 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Calling Decoder.Decode on a message which contains deeply nested structures can cause a panic due to stack exhaustion. This is a follow-up to CVE-2022-30635.
Which versions are affected by CVE-2024-34156?
2 open source packages ship an affected version, including golang and stdlib.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.22.7, 1.23.1 |
stdlib Go | All versions | 1.22.7, 1.23.1 |
Linux distribution packages (38)
git-lfs AlmaLinux:8 | All versions | 3.4.1-3.el8_10 |
containernetworking-plugins AlmaLinux:9 | All versions | 1:1.4.0-6.el9_4 |
containernetworking-plugins AlmaLinux:9 | All versions | 1:1.5.1-3.el9_5 |
delve AlmaLinux:9 | All versions | 1.24.1-2.el9_5 |
git-lfs AlmaLinux:9 | All versions | 3.4.1-4.el9_4 |
go-toolset AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-bin AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-docs AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-misc AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-race AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-src AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
golang-tests AlmaLinux:9 | All versions | 1.23.6-2.el9_5 |
grafana AlmaLinux:9 | All versions | 9.2.10-17.el9_4 |
grafana-pcp AlmaLinux:9 | All versions | 5.1.1-3.el9_4 |
grafana-pcp AlmaLinux:9 | All versions | 5.1.1-9.el9_5 |
grafana-selinux AlmaLinux:9 | All versions | 9.2.10-17.el9_4 |
osbuild-composer AlmaLinux:9 | All versions | 101-2.el9_4.alma.1 |
osbuild-composer AlmaLinux:9 | All versions | 118-2.el9_5.alma.1 |
osbuild-composer-core AlmaLinux:9 | All versions | 101-2.el9_4.alma.1 |
osbuild-composer-core AlmaLinux:9 | All versions | 118-2.el9_5.alma.1 |
osbuild-composer-worker AlmaLinux:9 | All versions | 101-2.el9_4.alma.1 |
osbuild-composer-worker AlmaLinux:9 | All versions | 118-2.el9_5.alma.1 |
skopeo AlmaLinux:9 | All versions | 2:1.14.5-2.el9_4 |
skopeo AlmaLinux:9 | All versions | 2:1.16.1-2.el9_5 |
skopeo-tests AlmaLinux:9 | All versions | 2:1.14.5-2.el9_4 |
skopeo-tests AlmaLinux:9 | All versions | 2:1.16.1-2.el9_5 |
git-lfs Red Hat:enterprise_linux:8::appstream | All versions | 0:3.4.1-3.el8_10 |
git-lfs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.4.1-3.el8_10 |
git-lfs-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:3.4.1-3.el8_10 |
containernetworking-plugins Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-6.el9_4 |
containernetworking-plugins Red Hat:enterprise_linux:9::appstream | All versions | 1:1.5.1-3.el9_5 |
containernetworking-plugins-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-6.el9_4 |
containernetworking-plugins-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.5.1-3.el9_5 |
containernetworking-plugins-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-6.el9_4 |
containernetworking-plugins-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 1:1.5.1-3.el9_5 |
git-lfs Red Hat:enterprise_linux:9::appstream | All versions | 0:3.4.1-4.el9_4 |
git-lfs-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:3.4.1-4.el9_4 |
How do I fix CVE-2024-34156?
Upgrade golang to a fixed version for your release line: 1.22.7 or 1.23.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-34156 being exploited?
There is no known exploitation of CVE-2024-34156 in the wild and no public exploit code.
Sources
Also known as ALSA-2024:11216, ALSA-2024:11217, ALSA-2024:6946, ALSA-2024:6947, ALSA-2024:7135, ALSA-2024:7136 and 80 more.