# CVE-2012-4528: Security feature bypass in n/a

> Remote attackers can bypass mod_security rules to deliver arbitrary POST data to PHP applications via crafted multipart requests.

- **Severity:** Medium 5.0 (`AV:N/AC:L/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:** Yes
- **Published:** 28 Dec 2012
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-4528, GHSA-v835-w774-qhww

## What is CVE-2012-4528?

CVE-2012-4528 is a medium-severity vulnerability in Fedoraproject Fedora, published on 28 Dec 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The mod_security2 module before 2.7.0 for the Apache HTTP Server allows remote attackers to bypass rules, and deliver arbitrary POST data to a PHP application, via a multipart request in which an invalid part precedes the crafted data.

## Which versions are affected by CVE-2012-4528?

It affects 3 products.


Products: Fedoraproject Fedora, Opensuse Opensuse, Trustwave Modsecurity.

## How do I fix CVE-2012-4528?

Upgrade to a fixed version.

## Is CVE-2012-4528 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-4528 exists.

Public exploit code:

- ModSecurity - 'POST' Security Bypass (exploitdb)

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-4528 and fix it if it is affected.

What it is: CVE-2012-4528 is a medium-severity vulnerability in Fedoraproject Fedora, published on 28 Dec 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-2012-4528 exists.

Affected product: Fedoraproject Fedora. 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-2012-4528/ (Markdown: https://insights.sbomify.com/CVE-2012-4528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-4528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-4528
- OSV: https://osv.dev/vulnerability/CVE-2012-4528

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-4528/
Summaries are generated and may contain mistakes; the official description above is the record.