# CVE-2011-4451: Code injection in n/a

> Remote attackers can inject arbitrary PHP code into log files via User-Agent headers when spam logging is enabled, potentially leading to code execution.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Sep 2012
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-65vv-mx5f-jggq

## What is CVE-2011-4451?

CVE-2011-4451 is a medium-severity code injection vulnerability in n/a, published on 5 Sep 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

libs/Wakka.class.php in WikkaWiki 1.3.1 and 1.3.2, when the spam_logging option is enabled, allows remote attackers to write arbitrary PHP code to the spamlog_path file via the User-Agent HTTP header in an addcomment request.  NOTE: the vendor disputes this issue because the rendering of the spamlog_path file never uses the PHP interpreter

## Which versions are affected by CVE-2011-4451?

It affects 1 product.


Products: Wikkawiki Wikkawiki.

## How do I fix CVE-2011-4451?

No fix has been published for CVE-2011-4451 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-4451 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4451 exists.

Public exploit code:

- WikkaWiki 1.3.2 - Multiple Vulnerabilities (exploitdb)
- WikkaWiki 1.3.2 Spam Logging PHP Injection (metasploit)

## Other vulnerabilities in n/a

- [CVE-2007-2613](https://insights.sbomify.com/CVE-2007-2613/): Code injection in n/a (high 8.3)
- [CVE-2011-4448](https://insights.sbomify.com/CVE-2011-4448/): SQL injection in n/a (high 7.5)
- [CVE-2007-2612](https://insights.sbomify.com/CVE-2007-2612/): SQL injection in n/a (high 7.5)
- [CVE-2006-7049](https://insights.sbomify.com/CVE-2006-7049/): Path traversal in n/a (high 7.5)
- [CVE-2011-4449](https://insights.sbomify.com/CVE-2011-4449/): File upload in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-4451 and fix it if it is affected.

What it is: CVE-2011-4451 is a medium-severity code injection vulnerability in n/a, published on 5 Sep 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4451 exists.

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-2011-4451/ (Markdown: https://insights.sbomify.com/CVE-2011-4451/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-4451
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-4451
- OSV: https://osv.dev/vulnerability/CVE-2011-4451

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From sbomify Insights: https://insights.sbomify.com/CVE-2011-4451/
Summaries are generated and may contain mistakes; the official description above is the record.