# CVE-2024-7156: TOTOLINK A3700R apmib Configuration ExportSettings.sh information disclosure

> Remote attackers can exploit the ExportSettings.sh script to disclose sensitive configuration information from TOTOLINK A3700R routers.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Jul 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-4pvc-vf8h-5h32

## What is CVE-2024-7156?

CVE-2024-7156 is a medium-severity vulnerability in TOTOLINK A3700R, published on 28 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in TOTOLINK A3700R 9.1.2u.5822_B20200513 and classified as problematic. Affected by this issue is some unknown functionality of the file /cgi-bin/ExportSettings.sh of the component apmib Configuration Handler. The manipulation leads to information disclosure. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-272570 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2024-7156?

It affects 1 product.


Products: Totolink A3700r Firmware.

## How do I fix CVE-2024-7156?

No fix has been published for CVE-2024-7156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-7156 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-7156 exists.

## Other vulnerabilities in TOTOLINK A3700R

- [CVE-2024-42545](https://insights.sbomify.com/CVE-2024-42545/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-37637](https://insights.sbomify.com/CVE-2024-37637/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-37634](https://insights.sbomify.com/CVE-2024-37634/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-37635](https://insights.sbomify.com/CVE-2024-37635/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-22660](https://insights.sbomify.com/CVE-2024-22660/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-7156 and fix it if it is affected.

What it is: CVE-2024-7156 is a medium-severity vulnerability in TOTOLINK A3700R, published on 28 Jul 2024. 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-2024-7156 exists.

Affected product: TOTOLINK A3700R. 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-2024-7156/ (Markdown: https://insights.sbomify.com/CVE-2024-7156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-7156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-7156
- OSV: https://osv.dev/vulnerability/CVE-2024-7156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-7156/
Summaries are generated and may contain mistakes; the official description above is the record.