# CVE-2018-0316: Denial of service in Cisco IP Phone 6800, 7800, and 8800 Series unknown

> Unauthenticated remote attackers can cause Cisco IP phones to reload unexpectedly via malicious SIP packets, resulting in a temporary denial of service.

- **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-2x7m-prqf-x77x

## What is CVE-2018-0316?

CVE-2018-0316 is a high-severity denial of service vulnerability in Cisco IP Phone 6800, 7800, and 8800 Series 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) call-handling functionality of Cisco IP Phone 6800, 7800, and 8800 Series Phones with Multiplatform Firmware could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability exists because the firmware of an affected phone incorrectly handles errors that could occur when an incoming phone call is not answered. An attacker could exploit this vulnerability by sending a set of maliciously crafted SIP packets to an affected phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. This vulnerability affects Cisco IP Phone 6800, 7800, and 8800 Series Phones with Multiplatform Firmware if they are running a Multiplatform Firmware release prior to Release 11.1(2). Cisco Bug IDs: CSCvi24718.

Weakness: CWE-755 (Improper Handling of Exceptional Conditions), CWE-399

## Which versions are affected by CVE-2018-0316?

It affects 1 product.


Products: Cisco Ip Phone Firmware.

## How do I fix CVE-2018-0316?

No fix has been published for CVE-2018-0316 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0316 being exploited?

There is no known exploitation of CVE-2018-0316 in the wild and no public exploit code.

## Other vulnerabilities in Cisco IP Phone 6800, 7800, and 8800 Series unknown

- [CVE-2018-0332](https://insights.sbomify.com/CVE-2018-0332/): Denial of service in Cisco Unified IP Phone Software unknown (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0316 and fix it if it is affected.

What it is: CVE-2018-0316 is a high-severity denial of service vulnerability in Cisco IP Phone 6800, 7800, and 8800 Series 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-2018-0316 in the wild and no public exploit code.

Affected product: Cisco IP Phone 6800, 7800, and 8800 Series 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-2018-0316/ (Markdown: https://insights.sbomify.com/CVE-2018-0316/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0316
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0316
- OSV: https://osv.dev/vulnerability/CVE-2018-0316

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0316/
Summaries are generated and may contain mistakes; the official description above is the record.