# CVE-2024-20380: ClamAV HTML Parser Denial of Service Vulnerability

> An unauthenticated remote attacker can cause a denial of service by submitting a crafted HTML file to ClamAV, crashing the scanning process.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/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:** Yes
- **Published:** 18 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-m2rv-2ggp-66m7, openSUSE-SU-2024:14087-1

## What is CVE-2024-20380?

CVE-2024-20380 is a high-severity denial of service vulnerability in Clamav Clamav, published on 18 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the HTML parser of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
The vulnerability is due to an issue in the C to Rust foreign function interface. An attacker could exploit this vulnerability by submitting a crafted file containing HTML content to be scanned by ClamAV on an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

Weakness: CWE-475 (Undefined Behavior for Input to API)

## Which versions are affected by CVE-2024-20380?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `clamav` | openSUSE:Tumbleweed | All versions | 1.3.1-1.1 |

Products: Clamav Clamav.

## How do I fix CVE-2024-20380?

Apply the vendor's patch.

## Is CVE-2024-20380 being exploited?

There is no known exploitation of CVE-2024-20380 in the wild and no public exploit code.

## Other vulnerabilities in Clamav Clamav

- [CVE-2010-0098](https://insights.sbomify.com/CVE-2010-0098/): Security feature bypass in n/a (critical 10.0)
- [CVE-2009-1372](https://insights.sbomify.com/CVE-2009-1372/): Memory corruption in n/a (critical 10.0)
- [CVE-2008-3914](https://insights.sbomify.com/CVE-2008-3914/): Denial of service in n/a (critical 10.0)
- [CVE-2008-0728](https://insights.sbomify.com/CVE-2008-0728/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-1615](https://insights.sbomify.com/CVE-2006-1615/): Other in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-20380 and fix it if it is affected.

What it is: CVE-2024-20380 is a high-severity denial of service vulnerability in Clamav Clamav, published on 18 Apr 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-2024-20380 in the wild and no public exploit code.

Affected product: Clamav Clamav. 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-2024-20380/ (Markdown: https://insights.sbomify.com/CVE-2024-20380/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-20380
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-20380
- OSV: https://osv.dev/vulnerability/CVE-2024-20380

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-20380/
Summaries are generated and may contain mistakes; the official description above is the record.