# CVE-2023-0897: Session FIxation in Sielco PolyEco1000

> Attackers can hijack sessions in Sielco PolyEco1000 due to weak cookie security and lack of SSL, leading to unauthorized access.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Oct 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-p8w3-h8rp-r2hj

## What is CVE-2023-0897?

CVE-2023-0897 is a high-severity authentication bypass vulnerability in Sielco  PolyEco1000, published on 26 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Sielco PolyEco1000 is vulnerable to a session hijack vulnerability due to the cookie being vulnerable to a brute force attack, lack of SSL, and the session being visible in requests.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2023-0897?

It affects 3 products.


Products: Sielco Polyeco1000 Firmware, Sielco Polyeco300 Firmware, Sielco Polyeco500 Firmware.

## How do I fix CVE-2023-0897?

No fix has been published for CVE-2023-0897 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0897 being exploited?

There is no known exploitation of CVE-2023-0897 in the wild and no public exploit code.

## Other vulnerabilities in Sielco  PolyEco1000

- [CVE-2023-46661](https://insights.sbomify.com/CVE-2023-46661/): Improper Access Control in Sielco PolyEco1000 (critical 9.8)
- [CVE-2023-46665](https://insights.sbomify.com/CVE-2023-46665/): Improper Access Control in Sielco PolyEco1000 (critical 9.8)
- [CVE-2023-5754](https://insights.sbomify.com/CVE-2023-5754/): Improper Restriction of Excessive Authentication Attempts in Sielco PolyEco1000 (critical 9.1)
- [CVE-2023-46662](https://insights.sbomify.com/CVE-2023-46662/): Improper Access Control in Sielco PolyEco1000 (high 7.5)
- [CVE-2023-46663](https://insights.sbomify.com/CVE-2023-46663/): Improper Access Control in Sielco PolyEco1000 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0897 and fix it if it is affected.

What it is: CVE-2023-0897 is a high-severity authentication bypass vulnerability in Sielco  PolyEco1000, published on 26 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-0897 in the wild and no public exploit code.

Affected product: Sielco  PolyEco1000. 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-2023-0897/ (Markdown: https://insights.sbomify.com/CVE-2023-0897/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0897
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0897
- OSV: https://osv.dev/vulnerability/CVE-2023-0897

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0897/
Summaries are generated and may contain mistakes; the official description above is the record.