# CVE-2024-46983: Remote Command Execution(RCE) Vulnerbility in sofa-hessian

> Attackers can achieve remote code execution by bypassing the blacklist mechanism in the SOFA Hessian deserialization library.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 19 Sep 2024
- **Updated:** 20 Sep 2024
- **Also known as:** GHSA-c459-2m73-67hj

## What is CVE-2024-46983?

CVE-2024-46983 is a critical unsafe deserialization vulnerability in sofastack sofa-hessian, published on 19 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

sofa-hessian is an internal improved version of Hessian3/4 powered by Ant Group CO., Ltd. The SOFA Hessian protocol uses a blacklist mechanism to restrict deserialization of potentially dangerous classes for security protection. But there is a gadget chain that can bypass the SOFA Hessian blacklist protection mechanism, and this gadget chain only relies on JDK and does not rely on any third-party components. This issue is fixed by an update to the blacklist, users can upgrade to sofahessian version 3.5.5 to avoid this issue. Users unable to upgrade may maintain a blacklist themselves in the directory `external/serialize.blacklist`.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2024-46983?

2 open source packages ship an affected version, including com.alipay.sofa:hessian. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.alipay.sofa:hessian` | Maven | All versions | 3.5.5 |
| `com.alipay.sofa:hessian` | Maven | All versions | 3.5.5 |

Products: Antfin Sofa-Hessian.

## How do I fix CVE-2024-46983?

Upgrade com.alipay.sofa:hessian to 3.5.5 or later.

## Is CVE-2024-46983 being exploited?

There is no known exploitation of CVE-2024-46983 in the wild and no public exploit code.

## Other vulnerabilities in sofastack sofa-hessian

- [CVE-2019-9212](https://insights.sbomify.com/CVE-2019-9212/): Incomplete List of Disallowed Inputs in SOFA-Hessian (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-46983 and fix it if it is affected.

What it is: CVE-2024-46983 is a critical unsafe deserialization vulnerability in sofastack sofa-hessian, published on 19 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-2024-46983 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.alipay.sofa:hessian (Maven): affected all versions; fixed in 3.5.5
- com.alipay.sofa:hessian (Maven): affected all versions; fixed in 3.5.5

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-2024-46983/ (Markdown: https://insights.sbomify.com/CVE-2024-46983/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-46983
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-46983
- OSV: https://osv.dev/vulnerability/CVE-2024-46983

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-46983/
Summaries are generated and may contain mistakes; the official description above is the record.