# CVE-2021-31917: Auth bypass in Red Hat DataGrid and Infinispan

> Attackers can bypass authentication on REST endpoints using DIGEST method, compromising data confidentiality, integrity, and availability in Red Hat DataGrid and Infinispan.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Sep 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gwqg-r7f7-jjw4

## What is CVE-2021-31917?

CVE-2021-31917 is a critical authentication bypass vulnerability in Red Hat DataGrid and Infinispan, published on 21 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in Red Hat DataGrid 8.x (8.0.0, 8.0.1, 8.1.0 and 8.1.1) and Infinispan (10.0.0 through 12.0.0). An attacker could bypass authentication on all REST endpoints when DIGEST is used as the authentication method. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2021-31917?

It affects 2 products.


Products: Infinispan Infinispan-Server-Rest, Redhat Data Grid.

## How do I fix CVE-2021-31917?

No fix has been published for CVE-2021-31917 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-31917 being exploited?

There is no known exploitation of CVE-2021-31917 in the wild and no public exploit code.

## Other vulnerabilities in Red Hat DataGrid and Infinispan

- [CVE-2020-10771](https://insights.sbomify.com/CVE-2020-10771/): Cross-site request forgery in Infinispan (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-31917 and fix it if it is affected.

What it is: CVE-2021-31917 is a critical authentication bypass vulnerability in Red Hat DataGrid and Infinispan, published on 21 Sep 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-2021-31917 in the wild and no public exploit code.

Affected product: Red Hat DataGrid and Infinispan. 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-2021-31917/ (Markdown: https://insights.sbomify.com/CVE-2021-31917/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-31917
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-31917
- OSV: https://osv.dev/vulnerability/CVE-2021-31917

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-31917/
Summaries are generated and may contain mistakes; the official description above is the record.