# CVE-2021-4277: fredsmith utils Filename screenshot_sync predictable state

> Predictable state in filename handling allows attackers to potentially guess filenames, requiring a patch for fredsmith utils.

- **Severity:** Low 2.6 (`CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Dec 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-3cqm-26w8-85g8

## What is CVE-2021-4277?

CVE-2021-4277 is a low-severity vulnerability in fredsmith utils, published on 25 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability, which was classified as problematic, has been found in fredsmith utils. This issue affects some unknown processing of the file screenshot_sync of the component Filename Handler. The manipulation leads to predictable from observable state. The name of the patch is dbab1b66955eeb3d76b34612b358307f5c4e3944. It is recommended to apply a patch to fix this issue. The identifier VDB-216749 was assigned to this vulnerability.

Weakness: CWE-330 (Use of Insufficiently Random Values), CWE-341 (Predictable from Observable State)

## Which versions are affected by CVE-2021-4277?

It affects 1 product.


Products: Utils Project Utils.

## How do I fix CVE-2021-4277?

No fix has been published for CVE-2021-4277 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4277 being exploited?

There is no known exploitation of CVE-2021-4277 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4277 and fix it if it is affected.

What it is: CVE-2021-4277 is a low-severity vulnerability in fredsmith utils, published on 25 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-4277 in the wild and no public exploit code.

Affected product: fredsmith utils. 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-2021-4277/ (Markdown: https://insights.sbomify.com/CVE-2021-4277/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4277
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4277
- OSV: https://osv.dev/vulnerability/CVE-2021-4277

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4277/
Summaries are generated and may contain mistakes; the official description above is the record.