# CVE-2021-41569: Path traversal in n/a

> Local File Inclusion in SAS/Intrnet allows attackers to read arbitrary files from the host OS via manipulated macro variables in the samples library.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6xqv-9mpx-wxjp

## What is CVE-2021-41569?

CVE-2021-41569 is a high-severity path traversal vulnerability in n/a, published on 19 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SAS/Intrnet 9.4 build 1520 and earlier allows Local File Inclusion. The samples library (included by default) in the appstart.sas file, allows end-users of the application to access the sample.webcsf1.sas program, which contains user-controlled macro variables that are passed to the DS2CSF macro. Users can escape the context of the configured user-controllable variable and append additional functions native to the macro but not included as variables within the library. This includes a function that retrieves files from the host OS.

Weakness: CWE-829 (Inclusion of Functionality from Untrusted Control Sphere)

## Which versions are affected by CVE-2021-41569?

It affects 1 product.


Products: Sas Sas\/Intrnet.

## How do I fix CVE-2021-41569?

No fix has been published for CVE-2021-41569 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41569 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-41569 exists.

Public exploit code:

- SAS/Internet 9.4 1520 - Local File Inclusion (nuclei): http/cves/2021/CVE-2021-41569.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41569 and fix it if it is affected.

What it is: CVE-2021-41569 is a high-severity path traversal vulnerability in n/a, published on 19 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-41569 exists.

Affected product: n/a. 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-2021-41569/ (Markdown: https://insights.sbomify.com/CVE-2021-41569/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41569
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41569
- OSV: https://osv.dev/vulnerability/CVE-2021-41569

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41569/
Summaries are generated and may contain mistakes; the official description above is the record.