# CVE-2023-2873: Twister Antivirus IoControlCode filppd.sys 0x80800043 memory corruption

> A local attacker can exploit memory corruption in Twister Antivirus to execute arbitrary code or escalate privileges.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 May 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-9fjp-qc23-9p54

## What is CVE-2023-2873?

CVE-2023-2873 is a medium-severity memory corruption vulnerability in Twister Antivirus, published on 24 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability classified as critical was found in Twister Antivirus 8. This vulnerability affects the function 0x804f2143/0x804f217f/0x804f214b/0x80800043 in the library filppd.sys of the component IoControlCode Handler. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-229852. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-787 (Out-of-bounds Write), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2023-2873?

It affects 1 product.


Products: Filseclab Twister Antivirus.

## How do I fix CVE-2023-2873?

No fix has been published for CVE-2023-2873 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2873 being exploited?

There is no known exploitation of CVE-2023-2873 in the wild and no public exploit code.

## Other vulnerabilities in Twister Antivirus

- [CVE-2023-1444](https://insights.sbomify.com/CVE-2023-1444/): Filseclab Twister Antivirus IoControlCode fildds.sys 0x8011206B denial of service (high 7.5)
- [CVE-2023-1443](https://insights.sbomify.com/CVE-2023-1443/): Filseclab Twister Antivirus IoControlCode fildds.sys 0x80112053 denial of service (medium 6.5)
- [CVE-2024-1140](https://insights.sbomify.com/CVE-2024-1140/): Twister Antivirus v8.17 - Out-of-bounds Read (medium 6.1)
- [CVE-2024-1096](https://insights.sbomify.com/CVE-2024-1096/): Twister Antivirus v8.17 - Denial of Service (medium 5.5)
- [CVE-2023-2874](https://insights.sbomify.com/CVE-2023-2874/): Twister Antivirus IoControlCode filppd.sys 0x804f2140 denial of service (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2873 and fix it if it is affected.

What it is: CVE-2023-2873 is a medium-severity memory corruption vulnerability in Twister Antivirus, published on 24 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2873 in the wild and no public exploit code.

Affected product: Twister Antivirus. 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-2023-2873/ (Markdown: https://insights.sbomify.com/CVE-2023-2873/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2873
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2873
- OSV: https://osv.dev/vulnerability/CVE-2023-2873

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2873/
Summaries are generated and may contain mistakes; the official description above is the record.