OSV-2020-494 Use-of-uninitialized-value in Variant_decodeJson
Not scored
Published
Check this codebase for OSV-2020-494 and fix it if it is affected.
What it is: OSV-2020-494 is a vulnerability in open62541, published on 1 Jul 2020.
Exploitation: There is no known exploitation of OSV-2020-494 in the wild and no public exploit code.
Affected packages and fixed versions:
- open62541 (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-2020-494/ (Markdown: https://insights.sbomify.com/OSV-2020-494/index.md)
An attacker can cause a denial of service by triggering a use-of-uninitialized-value error in the JSON decoding function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-494?
OSV-2020-494 is a vulnerability in open62541, published on 1 Jul 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14620
Crash type: Use-of-uninitialized-value
Crash state:
Variant_decodeJson
UA_decodeJson
fuzz_json_decode.cc
Which versions are affected by OSV-2020-494?
1 open source package ship an affected version, including open62541.
| Package | Affected | Fixed in |
|---|---|---|
open62541 OSS-Fuzz | All versions | None |
How do I fix OSV-2020-494?
No fix has been published for OSV-2020-494 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-494 being exploited?
There is no known exploitation of OSV-2020-494 in the wild and no public exploit code.