# CVE-2009-3051: Code injection in n/a

> Remote attackers can execute arbitrary code via format string vulnerabilities in the SILC Toolkit client library's nickname handling functions.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Sep 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-v9wf-6v95-96rm

## What is CVE-2009-3051?

CVE-2009-3051 is a high-severity code injection vulnerability in n/a, published on 10 Sep 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple format string vulnerabilities in lib/silcclient/client_entry.c in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.10, and SILC Client before 1.1.8, allow remote attackers to execute arbitrary code via format string specifiers in a nickname field, related to the (1) silc_client_add_client, (2) silc_client_update_client, and (3) silc_client_nickname_format functions.

Weakness: CWE-134 (Use of Externally-Controlled Format String)

## Which versions are affected by CVE-2009-3051?

It affects 2 products.


Products: Silcnet Silc Client, Silcnet Silc Toolkit.

## How do I fix CVE-2009-3051?

Upgrade to a fixed version.

## Is CVE-2009-3051 being exploited?

There is no known exploitation of CVE-2009-3051 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-3163](https://insights.sbomify.com/CVE-2009-3163/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-3051 and fix it if it is affected.

What it is: CVE-2009-3051 is a high-severity code injection vulnerability in n/a, published on 10 Sep 2009. 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-2009-3051 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-2009-3051/ (Markdown: https://insights.sbomify.com/CVE-2009-3051/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-3051
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-3051
- OSV: https://osv.dev/vulnerability/CVE-2009-3051

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-3051/
Summaries are generated and may contain mistakes; the official description above is the record.