# CVE-2023-30463: Integer overflow in n/a

> An integer overflow in picoTCP allows remote attackers to cause a denial of service via large ICMPv6 packets.

- **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:** No
- **Published:** 19 Apr 2023
- **Updated:** 5 Feb 2025
- **Also known as:** GHSA-46fh-f8vx-p359

## What is CVE-2023-30463?

CVE-2023-30463 is a high-severity vulnerability in n/a, published on 19 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Altran picoTCP through 1.7.0 allows memory corruption (and subsequent denial of service) because of an integer overflow in pico_ipv6_alloc when processing large ICMPv6 packets. This affects installations with Ethernet support in which a packet size greater than 65495 may occur.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2023-30463?

It affects 1 product.


Products: Altran Picotcp.

## How do I fix CVE-2023-30463?

No fix has been published for CVE-2023-30463 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-30463 being exploited?

There is no known exploitation of CVE-2023-30463 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-33304](https://insights.sbomify.com/CVE-2021-33304/): Use after free in n/a (critical 9.8)
- [CVE-2020-24338](https://insights.sbomify.com/CVE-2020-24338/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-1000210](https://insights.sbomify.com/CVE-2017-1000210/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-17441](https://insights.sbomify.com/CVE-2020-17441/): Information disclosure in n/a (critical 9.1)
- [CVE-2020-24341](https://insights.sbomify.com/CVE-2020-24341/): Information disclosure in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-30463 and fix it if it is affected.

What it is: CVE-2023-30463 is a high-severity vulnerability in n/a, published on 19 Apr 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-2023-30463 in the wild and no public exploit code.

Affected product: n/a. 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-2023-30463/ (Markdown: https://insights.sbomify.com/CVE-2023-30463/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-30463
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-30463
- OSV: https://osv.dev/vulnerability/CVE-2023-30463

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-30463/
Summaries are generated and may contain mistakes; the official description above is the record.