OSV-2020-600 Use-of-uninitialized-value in dprintf_formatf
Not scored
Published
Check this codebase for OSV-2020-600 and fix it if it is affected.
What it is: OSV-2020-600 is a vulnerability in curl, published on 1 Jul 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-2020-600 in the wild and no public exploit code.
Affected packages and fixed versions:
- curl (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-2020-600/ (Markdown: https://insights.sbomify.com/OSV-2020-600/index.md)
An attacker can potentially read uninitialized memory via a crafted format string in the curl library's printf functions.
- 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-2020-600?
OSV-2020-600 is a vulnerability in curl, published on 1 Jul 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=16699
Crash type: Use-of-uninitialized-value
Crash state:
dprintf_formatf
curl_mvsnprintf
curl_msnprintf
Which versions are affected by OSV-2020-600?
1 open source package ship an affected version, including curl.
| Package | Affected | Fixed in |
|---|---|---|
curl OSS-Fuzz | All versions | None |
How do I fix OSV-2020-600?
No fix has been published for OSV-2020-600 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-600 being exploited?
There is no known exploitation of OSV-2020-600 in the wild and no public exploit code.