CVE-2020-7731 Denial of Service (DoS)
High 7.5
Published
Updated
Check this codebase for CVE-2020-7731 and fix it if it is affected.
What it is: CVE-2020-7731 is a high-severity vulnerability in github.com/russellhaering/gosaml2, published on 30 Apr 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-2020-7731 in the wild and no public exploit code.
Affected product: github.com/russellhaering/gosaml2. 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-2020-7731/ (Markdown: https://insights.sbomify.com/CVE-2020-7731/index.md)
Attackers can cause a denial of service by sending malformed XML signatures to applications using the gosaml2 library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-7731?
CVE-2020-7731 is a high-severity vulnerability in github.com/russellhaering/gosaml2, published on 30 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects all versions <0.7.0 of package github.com/russellhaering/gosaml2. There is a crash on nil-pointer dereference caused by sending malformed XML signatures.
Weakness: CWE-476
Which versions are affected by CVE-2020-7731?
It affects 1 product.
Products include Gosaml2 Project Gosaml2.
How do I fix CVE-2020-7731?
Upgrade to a fixed version.
Is CVE-2020-7731 being exploited?
There is no known exploitation of CVE-2020-7731 in the wild and no public exploit code.