# CVE-2023-52946: Memory corruption in Synology Drive Client

> Remote attackers can crash the Synology Drive Client via a buffer overflow in the vss service component.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 26 Sep 2024
- **Updated:** 26 Sep 2024
- **Also known as:** GHSA-pfx6-gm2c-cw74

## What is CVE-2023-52946?

CVE-2023-52946 is a high-severity memory corruption vulnerability in Synology Drive Client, published on 26 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in vss service component in Synology Drive Client before 3.5.0-16084 allows remote attackers to overwrite trivial buffers and crash the client via unspecified vectors.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-52946?

It affects 1 product.


Products: Synology Drive Client.

## How do I fix CVE-2023-52946?

No fix has been published for CVE-2023-52946 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-52946 being exploited?

There is no known exploitation of CVE-2023-52946 in the wild and no public exploit code.

## Other vulnerabilities in Synology Drive Client

- [CVE-2022-49038](https://insights.sbomify.com/CVE-2022-49038/): Other in Synology Drive Client (high 7.8)
- [CVE-2022-49039](https://insights.sbomify.com/CVE-2022-49039/): Memory corruption in Synology Drive Client (medium 6.7)
- [CVE-2022-49037](https://insights.sbomify.com/CVE-2022-49037/): Information disclosure in Synology Drive Client (medium 6.5)
- [CVE-2022-49040](https://insights.sbomify.com/CVE-2022-49040/): Memory corruption in Synology Drive Client (medium 4.4)
- [CVE-2022-49041](https://insights.sbomify.com/CVE-2022-49041/): Memory corruption in Synology Drive Client (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-52946 and fix it if it is affected.

What it is: CVE-2023-52946 is a high-severity memory corruption vulnerability in Synology Drive Client, published on 26 Sep 2024. 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-2023-52946 in the wild and no public exploit code.

Affected product: Synology Drive Client. 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-2023-52946/ (Markdown: https://insights.sbomify.com/CVE-2023-52946/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-52946
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-52946
- OSV: https://osv.dev/vulnerability/CVE-2023-52946

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-52946/
Summaries are generated and may contain mistakes; the official description above is the record.