CVE-2021-37155 Security feature bypass in n/a
Critical 9.8
Published
Updated
Check this codebase for CVE-2021-37155 and fix it if it is affected.
What it is: CVE-2021-37155 is a critical vulnerability in Wolfssl Wolfssl, published on 21 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-37155 in the wild and no public exploit code.
Affected product: Wolfssl Wolfssl. No package-level version data is available, so check the vendor advisory linked from the reference page.
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/CVE-2021-37155/ (Markdown: https://insights.sbomify.com/CVE-2021-37155/index.md)
wolfSSL fails to validate OCSP serial number mismatches, allowing attackers to bypass certificate revocation checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-37155?
CVE-2021-37155 is a critical vulnerability in Wolfssl Wolfssl, published on 21 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
Which versions are affected by CVE-2021-37155?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2021-37155?
Upgrade to a fixed version.
Is CVE-2021-37155 being exploited?
There is no known exploitation of CVE-2021-37155 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2021-37155, GHSA-75c6-vpv5-rvvq, UBUNTU-CVE-2021-37155.