# CVE-2016-1000104: Security feature bypass in n/a

> Attackers can bypass security controls in the mod_fcgid module via the FcgidPassHeader Proxy, potentially exposing protected resources.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Dec 2019
- **Updated:** 6 Aug 2024
- **Also known as:** AZL-36963, AZL-7290, GHSA-3qww-55h8-4xjp, MGASA-2017-0203, OESA-2022-1758, SUSE-SU-2016:1820-1, UBUNTU-CVE-2016-1000104

## What is CVE-2016-1000104?

CVE-2016-1000104 is a high-severity vulnerability in Opensuse Leap, published on 3 Dec 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security Bypass vulnerability exists in the FcgidPassHeader Proxy in mod_fcgid through 2016-07-07.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2016-1000104?

It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apache2-mod_fcgid` | SUSE:Linux Enterprise Software Development Kit 11 SP4 | All versions | 2.2-31.29.1 |

Products: Apache Mod Fcgid, Opensuse Leap, Opensuse Opensuse.

## How do I fix CVE-2016-1000104?

Apply the vendor's patch.

## Is CVE-2016-1000104 being exploited?

There is no known exploitation of CVE-2016-1000104 in the wild and no public exploit code.

## Other vulnerabilities in Opensuse Leap

- [CVE-2013-4365](https://insights.sbomify.com/CVE-2013-4365/): Memory corruption in n/a (high 7.5)
- [CVE-2010-3872](https://insights.sbomify.com/CVE-2010-3872/): Httpd: mod_fcgid: stack-based buffer overflow in fcgid_header_bucket_read() in modules/fcgid/fcgid_bucket.c (high 7.5)
- [CVE-2012-1181](https://insights.sbomify.com/CVE-2012-1181/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-1000104 and fix it if it is affected.

What it is: CVE-2016-1000104 is a high-severity vulnerability in Opensuse Leap, published on 3 Dec 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-1000104 in the wild and no public exploit code.

Affected product: Opensuse Leap. 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-2016-1000104/ (Markdown: https://insights.sbomify.com/CVE-2016-1000104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-1000104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-1000104
- OSV: https://osv.dev/vulnerability/CVE-2016-1000104

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-1000104/
Summaries are generated and may contain mistakes; the official description above is the record.