CVE-2009-0939 Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as
Critical 10.0
Published
Updated
Check this codebase for CVE-2009-0939 and fix it if it is affected.
What it is: CVE-2009-0939 is a critical vulnerability in Tor Tor, published on 18 Mar 2009.
Exploitation: There is no known exploitation of CVE-2009-0939 in the wild and no public exploit code.
Affected product: Tor Tor. 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-2009-0939/ (Markdown: https://insights.sbomify.com/CVE-2009-0939/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2009-0939?
CVE-2009-0939 is a critical vulnerability in Tor Tor, published on 18 Mar 2009.
Official description
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
Which versions are affected by CVE-2009-0939?
It affects 1 product.
Products include Tor Tor.
How do I fix CVE-2009-0939?
Upgrade to a fixed version.
Is CVE-2009-0939 being exploited?
There is no known exploitation of CVE-2009-0939 in the wild and no public exploit code.
Other vulnerabilities in Tor Tor
Sources
Also known as DEBIAN-CVE-2009-0939, GHSA-4v97-9crm-p348.