OSV-2022-181 Heap-use-after-free in zval_call_destructor
Not scored
Published
Check this codebase for OSV-2022-181 and fix it if it is affected.
What it is: OSV-2022-181 is an use after free vulnerability in php, published on 21 Feb 2022.
Exploitation: There is no known exploitation of OSV-2022-181 in the wild and no public exploit code.
Affected packages and fixed versions:
- php (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-2022-181/ (Markdown: https://insights.sbomify.com/OSV-2022-181/index.md)
A heap-use-after-free vulnerability in the PHP engine's destructor handling allows attackers to potentially 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-2022-181?
OSV-2022-181 is an use after free vulnerability in php, published on 21 Feb 2022.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44885
Crash type: Heap-use-after-free READ 4
Crash state:
zval_call_destructor
zend_hash_reverse_apply
shutdown_destructors
Which versions are affected by OSV-2022-181?
1 open source package ship an affected version, including php.
| Package | Affected | Fixed in |
|---|---|---|
php OSS-Fuzz | All versions | None |
How do I fix OSV-2022-181?
No fix has been published for OSV-2022-181 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2022-181 being exploited?
There is no known exploitation of OSV-2022-181 in the wild and no public exploit code.