# CVE-2023-35867: Denial of service in BIS Video Engine

> Unauthenticated attackers can cause a Denial of Service in Bosch video management software by replacing the API server via Man-in-the-Middle attacks.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-hj54-qg34-2jrm

## What is CVE-2023-35867?

CVE-2023-35867 is a medium-severity denial of service vulnerability in Bosch BIS Video Engine, published on 18 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An improper handling of a malformed API answer packets to API clients in Bosch BT software products can allow an unauthenticated attacker to cause a Denial of Service (DoS) situation. To exploit this vulnerability an attacker has to replace an existing API server e.g. through Man-in-the-Middle attacks.

Weakness: CWE-703 (Improper Check or Handling of Exceptional Conditions)

## Which versions are affected by CVE-2023-35867?

It affects 14 products.


Products: Bosch  Onvif Camera Event Driver Tool, Bosch Bosch Video Management System, Bosch Building Integration System Video Engine, Bosch Configuration Manager, Bosch Divar Ip 7000 R2 Firmware, Bosch Divar Ip All-in-One 4000 Firmware, Bosch Divar Ip All-in-One 5000 Firmware, Bosch Divar Ip All-in-One 6000 Firmware, Bosch Divar Ip All-in-One 7000 Firmware, Bosch Divar Ip All-in-One 7000 R3 Firmware, Bosch Intelligent Insights, Bosch Project Assistant, Bosch Video Management System Viewer, Bosch Video Security Client.

## How do I fix CVE-2023-35867?

No fix has been published for CVE-2023-35867 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-35867 being exploited?

There is no known exploitation of CVE-2023-35867 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-35867 and fix it if it is affected.

What it is: CVE-2023-35867 is a medium-severity denial of service vulnerability in Bosch BIS Video Engine, published on 18 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-35867 in the wild and no public exploit code.

Affected product: Bosch BIS Video Engine. 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-2023-35867/ (Markdown: https://insights.sbomify.com/CVE-2023-35867/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-35867
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-35867
- OSV: https://osv.dev/vulnerability/CVE-2023-35867

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-35867/
Summaries are generated and may contain mistakes; the official description above is the record.