OSV-2022-891 Stack-buffer-overflow in flb_env_var_translate
Not scored
Published
Check this codebase for OSV-2022-891 and fix it if it is affected.
What it is: OSV-2022-891 is a memory corruption vulnerability in fluent-bit, published on 14 Sep 2022.
Exploitation: There is no known exploitation of OSV-2022-891 in the wild and no public exploit code.
Affected packages and fixed versions:
- fluent-bit (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-2022-891/ (Markdown: https://insights.sbomify.com/OSV-2022-891/index.md)
A stack buffer overflow in Fluent Bit's environment variable translation allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-891?
OSV-2022-891 is a memory corruption vulnerability in fluent-bit, published on 14 Sep 2022.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51278
Crash type: Stack-buffer-overflow WRITE {*}
Crash state:
flb_env_var_translate
flb_parser_conf_file
config_random_fuzzer.c
Which versions are affected by OSV-2022-891?
1 open source package ship an affected version, including fluent-bit.
| Package | Affected | Fixed in |
|---|---|---|
fluent-bit OSS-Fuzz | All versions | None |
How do I fix OSV-2022-891?
No fix has been published for OSV-2022-891 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2022-891 being exploited?
There is no known exploitation of OSV-2022-891 in the wild and no public exploit code.