# CVE-2022-24705: Buffer Overflow via Crafted Ipv6 Prefix Attribute Type Client Request in accel-ppp v1.12

> A buffer overflow in accel-ppp allows remote attackers to execute arbitrary code via crafted IPv6 prefix attribute requests.

- **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:** No
- **Published:** 14 Feb 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-8hhg-rh8g-2x9h

## What is CVE-2022-24705?

CVE-2022-24705 is a critical memory corruption vulnerability in https://accel-ppp.org/ accel-ppp, published on 14 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The rad_packet_recv function in radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-large recvfrom into a fixed buffer that causes a buffer overflow and overwrites arbitrary memory. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.

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

## Which versions are affected by CVE-2022-24705?

It affects 1 product.


Products: Accel-Ppp Accel-Ppp.

## How do I fix CVE-2022-24705?

No fix has been published for CVE-2022-24705 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24705 being exploited?

There is no known exploitation of CVE-2022-24705 in the wild and no public exploit code.

## Other vulnerabilities in https://accel-ppp.org/ accel-ppp

- [CVE-2022-0982](https://insights.sbomify.com/CVE-2022-0982/): Buffer Overflow via crafted client request in Accel-PPP v1.12 (critical 9.8)
- [CVE-2022-24704](https://insights.sbomify.com/CVE-2022-24704/): Buffer Overflow via Crafted IPv6 Addr Attribute Type Client Request in Accel-PPP v1.12 (critical 9.8)
- [CVE-2020-28194](https://insights.sbomify.com/CVE-2020-28194/): Integer overflow in n/a (critical 9.8)
- [CVE-2020-15173](https://insights.sbomify.com/CVE-2020-15173/): Heap buffer overflow in ACCEL-PPP (high 8.2)
- [CVE-2021-42870](https://insights.sbomify.com/CVE-2021-42870/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24705 and fix it if it is affected.

What it is: CVE-2022-24705 is a critical memory corruption vulnerability in https://accel-ppp.org/ accel-ppp, published on 14 Feb 2022. 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-2022-24705 in the wild and no public exploit code.

Affected product: https://accel-ppp.org/ accel-ppp. 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-2022-24705/ (Markdown: https://insights.sbomify.com/CVE-2022-24705/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24705
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24705
- OSV: https://osv.dev/vulnerability/CVE-2022-24705

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24705/
Summaries are generated and may contain mistakes; the official description above is the record.