# CVE-2007-5365: Memory corruption in n/a

> Remote attackers can execute arbitrary code or crash the DHCP daemon via a malformed DHCP request with an invalid maximum message size.

- **Severity:** High 7.2 (`AV:L/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 11 Oct 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DSA-1388-1, DSA-1388-3, GHSA-q79j-j4r9-8grp

## What is CVE-2007-5365?

CVE-2007-5365 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 11 Oct 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD 4.0 through 4.2, and some other dhcpd implementations based on ISC dhcp-2, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a DHCP request specifying a maximum message size smaller than the minimum IP MTU.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2007-5365?

It affects 7 products.


Products: Debian Debian Linux, Openbsd Openbsd, Redhat Enterprise Linux, Redhat Linux Advanced Workstation, Sun Opensolaris, Sun Solaris, Ubuntu Ubuntu Linux.

## How do I fix CVE-2007-5365?

Apply the vendor's patch.

## Is CVE-2007-5365 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-5365 exists.

Public exploit code:

- Ubuntu 6.06 - DHCPd Remote Denial of Service (exploitdb)

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-5365 and fix it if it is affected.

What it is: CVE-2007-5365 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 11 Oct 2007. 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-2007-5365 exists.

Affected product: Debian Debian Linux. 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-2007-5365/ (Markdown: https://insights.sbomify.com/CVE-2007-5365/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-5365
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-5365
- OSV: https://osv.dev/vulnerability/CVE-2007-5365

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From sbomify Insights: https://insights.sbomify.com/CVE-2007-5365/
Summaries are generated and may contain mistakes; the official description above is the record.