CVE-2023-0440 Observable Discrepancy in healthchecks/healthchecks
Medium 5.3
Published
Updated
Check this codebase for CVE-2023-0440 and fix it if it is affected.
What it is: CVE-2023-0440 is a medium-severity vulnerability in healthchecks/healthchecks, published on 23 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0440 exists.
Affected product: healthchecks/healthchecks. No package-level version data is available, so check the vendor advisory linked from the reference page.
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-2023-0440/ (Markdown: https://insights.sbomify.com/CVE-2023-0440/index.md)
An observable discrepancy in Healthchecks allows attackers to potentially infer sensitive information through timing or response variations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-0440?
CVE-2023-0440 is a medium-severity vulnerability in healthchecks/healthchecks, published on 23 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.
Weakness: CWE-203
Which versions are affected by CVE-2023-0440?
It affects 1 product.
Products include Healthchecks Healthchecks.
How do I fix CVE-2023-0440?
No fix has been published for CVE-2023-0440 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-0440 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0440 exists.