CVE-2023-45613 Security feature bypass in Ktor
Medium 6.8
Published
Updated
Check this codebase for CVE-2023-45613 and fix it if it is affected.
What it is: CVE-2023-45613 is a medium-severity vulnerability in JetBrains Ktor, published on 9 Oct 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-2023-45613 in the wild and no public exploit code.
Affected product: JetBrains Ktor. 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-2023-45613/ (Markdown: https://insights.sbomify.com/CVE-2023-45613/index.md)
Attackers can bypass TLS certificate validation in JetBrains Ktor, enabling man-in-the-middle attacks against secure connections.
- 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
- None listed
What is CVE-2023-45613?
CVE-2023-45613 is a medium-severity vulnerability in JetBrains Ktor, published on 9 Oct 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
In JetBrains Ktor before 2.3.5 server certificates were not verified
Weakness: CWE-295
Which versions are affected by CVE-2023-45613?
It affects 1 product.
Products include Jetbrains Ktor.
How do I fix CVE-2023-45613?
No fix has been published for CVE-2023-45613 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-45613 being exploited?
There is no known exploitation of CVE-2023-45613 in the wild and no public exploit code.
Other vulnerabilities in JetBrains Ktor
Sources
Also known as GHSA-2fvw-ppfc-cm77.