# CVE-2024-2976: Tenda F1203 execCommand R7WebsSecurityHandler stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the Tenda F1203 router's security handler, potentially leading to arbitrary code execution.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Mar 2024
- **Updated:** 21 Aug 2024
- **Also known as:** GHSA-g3w4-73xh-8jrw

## What is CVE-2024-2976?

CVE-2024-2976 is a high-severity memory corruption vulnerability in Tenda F1203, published on 27 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in Tenda F1203 2.0.1.6. It has been declared as critical. Affected by this vulnerability is the function R7WebsSecurityHandler of the file /goform/execCommand. The manipulation of the argument password leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-258145 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-2976?

It affects 1 product.


Products: Tenda F1203 Firmware.

## How do I fix CVE-2024-2976?

No fix has been published for CVE-2024-2976 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2976 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-2976 exists.

## Other vulnerabilities in Tenda F1203

- [CVE-2023-38934](https://insights.sbomify.com/CVE-2023-38934/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-38940](https://insights.sbomify.com/CVE-2023-38940/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-46538](https://insights.sbomify.com/CVE-2022-46538/): Command injection in n/a (critical 9.8)
- [CVE-2022-46547](https://insights.sbomify.com/CVE-2022-46547/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-2977](https://insights.sbomify.com/CVE-2024-2977/): Tenda F1203 QuickIndex formQuickIndex stack-based overflow (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2976 and fix it if it is affected.

What it is: CVE-2024-2976 is a high-severity memory corruption vulnerability in Tenda F1203, published on 27 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-2976 exists.

Affected product: Tenda F1203. 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-2024-2976/ (Markdown: https://insights.sbomify.com/CVE-2024-2976/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2976
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2976
- OSV: https://osv.dev/vulnerability/CVE-2024-2976

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-2976/
Summaries are generated and may contain mistakes; the official description above is the record.