# CVE-2022-23135: Path traversal in ZXHN F677, ZXHN F477

> An attacker with specific permissions can exploit a directory traversal flaw in ZTE home gateways to access and modify system files, leading to information leaks.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Feb 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jfrp-684p-p4j4

## What is CVE-2022-23135?

CVE-2022-23135 is a medium-severity path traversal vulnerability in ZXHN F677, ZXHN F477, published on 24 Feb 2022. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

There is a directory traversal vulnerability in some home gateway products of ZTE. Due to the lack of verification of user modified destination path, an attacker with specific permissions could modify the FTP access path to access and modify the system path contents without authorization, which will cause information leak and affect device operation.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2022-23135?

It affects 2 products.


Products: Zte Zxhn F477 Firmware, Zte Zxhn F677 Firmware.

## How do I fix CVE-2022-23135?

No fix has been published for CVE-2022-23135 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-23135 being exploited?

There is no known exploitation of CVE-2022-23135 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-23135 and fix it if it is affected.

What it is: CVE-2022-23135 is a medium-severity path traversal vulnerability in ZXHN F677, ZXHN F477, published on 24 Feb 2022. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-23135 in the wild and no public exploit code.

Affected product: ZXHN F677, ZXHN F477. 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-2022-23135/ (Markdown: https://insights.sbomify.com/CVE-2022-23135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-23135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23135
- OSV: https://osv.dev/vulnerability/CVE-2022-23135

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-23135/
Summaries are generated and may contain mistakes; the official description above is the record.