OSV-2020-1641 Use-of-uninitialized-value in us_internal_dispatch_ready_poll
Not scored
Published
Check this codebase for OSV-2020-1641 and fix it if it is affected.
What it is: OSV-2020-1641 is a vulnerability in uwebsockets, published on 21 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of OSV-2020-1641 in the wild and no public exploit code.
Affected packages and fixed versions:
- uwebsockets (OSS-Fuzz): affected all versions; no fix listed
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/OSV-2020-1641/ (Markdown: https://insights.sbomify.com/OSV-2020-1641/index.md)
An attacker can cause a denial of service in applications using the uWebSockets library by triggering a use-of-uninitialized-value crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-1641?
OSV-2020-1641 is a vulnerability in uwebsockets, published on 21 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25057
Crash type: Use-of-uninitialized-value
Crash state:
us_internal_dispatch_ready_poll
us_loop_run
uWS::TemplatedApp<false>::run
Which versions are affected by OSV-2020-1641?
1 open source package ship an affected version, including uwebsockets.
| Package | Affected | Fixed in |
|---|---|---|
uwebsockets OSS-Fuzz | All versions | None |
How do I fix OSV-2020-1641?
No fix has been published for OSV-2020-1641 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-1641 being exploited?
There is no known exploitation of OSV-2020-1641 in the wild and no public exploit code.