GHSA-pw2q-qwvj-gh43 Cache Flooding in TYPO3 Frontend
Not scored
Published
Check this codebase for GHSA-pw2q-qwvj-gh43 and fix it if it is affected.
What it is: GHSA-pw2q-qwvj-gh43 is a denial of service vulnerability in typo3/cms, published on 5 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-pw2q-qwvj-gh43 in the wild and no public exploit code.
Affected packages and fixed versions:
- typo3/cms (Packagist): affected from 6.2.0; fixed in 6.2.27
- typo3/cms (Packagist): affected from 6.2.0; fixed in 6.2.27
- typo3/cms (Packagist): affected from 7.6.0; fixed in 7.6.11
- typo3/cms (Packagist): affected from 7.6.0; fixed in 7.6.11
- typo3/cms (Packagist): affected from 8.0.0; fixed in 8.3.1
- typo3/cms (Packagist): affected from 8.0.0; fixed in 8.3.1
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-pw2q-qwvj-gh43/ (Markdown: https://insights.sbomify.com/GHSA-pw2q-qwvj-gh43/index.md)
Attackers can flood the TYPO3 frontend cache with useless entries using valid cHash arguments, potentially causing a Denial of Service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-pw2q-qwvj-gh43?
GHSA-pw2q-qwvj-gh43 is a denial of service vulnerability in typo3/cms, published on 5 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Links with a valid cHash argument lead to newly generated page cache entries. Because the cHash is not bound to a specific page, attackers could use valid cHash arguments for multiple pages, leading to additional useless page cache entries. Depending on the number of pages in the system and the number of available valid links with a cHash, attackers could add a considerable amount of additional cache entries, which in the end exceed storage limits and thus could lead to the system not responding any more. This means the Cache Flooding attack potentially could lead to a successful Denial of Service (DoS) attack.
Which versions are affected by GHSA-pw2q-qwvj-gh43?
6 open source packages ship an affected version, including typo3/cms.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 6.2.0 | 6.2.27 |
typo3/cms Packagist | From 6.2.0 | 6.2.27 |
typo3/cms Packagist | From 7.6.0 | 7.6.11 |
typo3/cms Packagist | From 7.6.0 | 7.6.11 |
typo3/cms Packagist | From 8.0.0 | 8.3.1 |
typo3/cms Packagist | From 8.0.0 | 8.3.1 |
How do I fix GHSA-pw2q-qwvj-gh43?
Upgrade typo3/cms to a fixed version for your release line: 6.2.27, 7.6.11 or 8.3.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-pw2q-qwvj-gh43 being exploited?
There is no known exploitation of GHSA-pw2q-qwvj-gh43 in the wild and no public exploit code.