# CVE-2007-0251: Integer overflow in n/a

> Remote attackers can trigger an integer underflow in Snort via crafted GRE packets, potentially causing log corruption or sensitive information disclosure.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jan 2007
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-35hc-p777-hj85

## What is CVE-2007-0251?

CVE-2007-0251 is a high-severity vulnerability in n/a, published on 16 Jan 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.

## Which versions are affected by CVE-2007-0251?

It affects 1 product.


Products: Snort Snort.

## How do I fix CVE-2007-0251?

No fix has been published for CVE-2007-0251 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-0251 being exploited?

There is no known exploitation of CVE-2007-0251 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2006-5276](https://insights.sbomify.com/CVE-2006-5276/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-0033](https://insights.sbomify.com/CVE-2003-0033/): Memory corruption in n/a (critical 10.0)
- [CVE-2016-1417](https://insights.sbomify.com/CVE-2016-1417/): Path traversal in n/a (high 8.8)
- [CVE-2007-1398](https://insights.sbomify.com/CVE-2007-1398/): Denial of service in n/a (high 7.1)
- [CVE-2008-1804](https://insights.sbomify.com/CVE-2008-1804/): Security feature bypass in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-0251 and fix it if it is affected.

What it is: CVE-2007-0251 is a high-severity vulnerability in n/a, published on 16 Jan 2007. 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-2007-0251 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-2007-0251/ (Markdown: https://insights.sbomify.com/CVE-2007-0251/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-0251
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-0251
- OSV: https://osv.dev/vulnerability/CVE-2007-0251

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-0251/
Summaries are generated and may contain mistakes; the official description above is the record.