GHSA-8h28-f46f-m87h Insecure Deserialization in TYPO3 CMS
Not scored
Published
Check this codebase for GHSA-8h28-f46f-m87h and fix it if it is affected.
What it is: GHSA-8h28-f46f-m87h is an unsafe deserialization vulnerability in typo3/cms, published on 5 Jun 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-8h28-f46f-m87h in the wild and no public exploit code.
Affected packages and fixed versions:
- typo3/cms (Packagist): affected from 8.5.0; fixed in 8.7.17
- typo3/cms (Packagist): affected from 8.5.0; fixed in 8.7.17
- typo3/cms (Packagist): affected from 9.0.0; fixed in 9.3.2
- typo3/cms (Packagist): affected from 9.0.0; fixed in 9.3.2
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/GHSA-8h28-f46f-m87h/ (Markdown: https://insights.sbomify.com/GHSA-8h28-f46f-m87h/index.md)
Authenticated backend users can execute arbitrary code via insecure deserialization in the TYPO3 Form Framework when using the yaml PECL package.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-8h28-f46f-m87h?
GHSA-8h28-f46f-m87h is an unsafe deserialization vulnerability in typo3/cms, published on 5 Jun 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
It has been discovered that the Form Framework (system extension "form") is vulnerable to Insecure Deserialization when being used with the additional PHP PECL package “yaml”, which is capable of unserializing YAML contents to PHP objects. A valid backend user account as well as having PHP setting "yaml.decode_php" enabled is needed to exploit this vulnerability (which is the default value according to PHP documentation).
Which versions are affected by GHSA-8h28-f46f-m87h?
4 open source packages ship an affected version, including typo3/cms.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 8.5.0 | 8.7.17 |
typo3/cms Packagist | From 8.5.0 | 8.7.17 |
typo3/cms Packagist | From 9.0.0 | 9.3.2 |
typo3/cms Packagist | From 9.0.0 | 9.3.2 |
How do I fix GHSA-8h28-f46f-m87h?
Upgrade typo3/cms to a fixed version for your release line: 8.7.17 or 9.3.2.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is GHSA-8h28-f46f-m87h being exploited?
There is no known exploitation of GHSA-8h28-f46f-m87h in the wild and no public exploit code.