# CVE-2011-2012: Denial of service in n/a

> Remote attackers can cause a denial of service in Microsoft Forefront UAG by sending unspecified network traffic that exploits improper session cookie validation.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Oct 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-9q92-w4h6-42xf

## What is CVE-2011-2012?

CVE-2011-2012 is a medium-severity denial of service vulnerability in n/a, published on 12 Oct 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 does not properly validate session cookies, which allows remote attackers to cause a denial of service (IIS outage) via unspecified network traffic, aka "Null Session Cookie Crash."

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2011-2012?

It affects 1 product.


Products: Microsoft Forefront Unified Access Gateway.

## How do I fix CVE-2011-2012?

No fix has been published for CVE-2011-2012 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-2012 being exploited?

There is no known exploitation of CVE-2011-2012 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-12571](https://insights.sbomify.com/CVE-2018-12571/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2011-1969](https://insights.sbomify.com/CVE-2011-1969/): Code injection in n/a (critical 9.3)
- [CVE-2012-0146](https://insights.sbomify.com/CVE-2012-0146/): Open redirect in n/a (medium 5.8)
- [CVE-2010-2732](https://insights.sbomify.com/CVE-2010-2732/): Open redirect in n/a (medium 5.8)
- [CVE-2012-0147](https://insights.sbomify.com/CVE-2012-0147/): Information disclosure in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-2012 and fix it if it is affected.

What it is: CVE-2011-2012 is a medium-severity denial of service vulnerability in n/a, published on 12 Oct 2011. 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-2011-2012 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-2011-2012/ (Markdown: https://insights.sbomify.com/CVE-2011-2012/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-2012
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-2012
- OSV: https://osv.dev/vulnerability/CVE-2011-2012

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-2012/
Summaries are generated and may contain mistakes; the official description above is the record.