OSV-2020-831 Heap-buffer-overflow in g_string_insert_len
Not scored
Published
Check this codebase for OSV-2020-831 and fix it if it is affected.
What it is: OSV-2020-831 is a memory corruption vulnerability in glib, published on 14 Jul 2020.
Exploitation: There is no known exploitation of OSV-2020-831 in the wild and no public exploit code.
Affected packages and fixed versions:
- glib (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-2020-831/ (Markdown: https://insights.sbomify.com/OSV-2020-831/index.md)
A heap-buffer-overflow in GLib's string insertion function can lead to crashes or potential code execution when processing malformed URIs.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is OSV-2020-831?
OSV-2020-831 is a memory corruption vulnerability in glib, published on 14 Jul 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23816
Crash type: Heap-buffer-overflow READ 5
Crash state:
g_string_insert_len
g_string_append_len
_uri_encoder
Which versions are affected by OSV-2020-831?
1 open source package ship an affected version, including glib.
| Package | Affected | Fixed in |
|---|---|---|
glib OSS-Fuzz | All versions | None |
How do I fix OSV-2020-831?
No fix has been published for OSV-2020-831 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-2020-831 being exploited?
There is no known exploitation of OSV-2020-831 in the wild and no public exploit code.