# CVE-2018-0332: Denial of service in Cisco Unified IP Phone Software unknown

> Remote attackers can cause denial of service on Cisco IP phones by flooding SIP traffic due to missing flow control.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jun 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-gv4m-rwq2-3qhw

## What is CVE-2018-0332?

CVE-2018-0332 is a high-severity denial of service vulnerability in Cisco Unified IP Phone Software unknown, published on 7 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the Session Initiation Protocol (SIP) ingress packet processing of Cisco Unified IP Phone software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a lack of flow-control mechanisms in the software. An attacker could exploit this vulnerability by sending high volumes of SIP INVITE traffic to the targeted device. Successful exploitation could allow the attacker to cause a disruption of services on the targeted IP phone. Cisco Bug IDs: CSCve10064, CSCve14617, CSCve14638, CSCve14683, CSCve20812, CSCve20926, CSCve20945.

Weakness: CWE-399

## Which versions are affected by CVE-2018-0332?

It affects 2 products.


Products: Cisco Ip Phone Firmware, Cisco Unified Ip Phone Firmware.

## How do I fix CVE-2018-0332?

No fix has been published for CVE-2018-0332 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0332 being exploited?

There is no known exploitation of CVE-2018-0332 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified IP Phone Software unknown

- [CVE-2018-0316](https://insights.sbomify.com/CVE-2018-0316/): Denial of service in Cisco IP Phone 6800, 7800, and 8800 Series unknown (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0332 and fix it if it is affected.

What it is: CVE-2018-0332 is a high-severity denial of service vulnerability in Cisco Unified IP Phone Software unknown, published on 7 Jun 2018. 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-2018-0332 in the wild and no public exploit code.

Affected product: Cisco Unified IP Phone Software unknown. 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-2018-0332/ (Markdown: https://insights.sbomify.com/CVE-2018-0332/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0332
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0332
- OSV: https://osv.dev/vulnerability/CVE-2018-0332

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0332/
Summaries are generated and may contain mistakes; the official description above is the record.