# CVE-2017-12219: Denial of service in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones

> Remote attackers can cause Cisco IP phones to reload unexpectedly by sending crafted IP fragments, resulting in a 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:** 21 Sep 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-473r-243h-5q84

## What is CVE-2017-12219?

CVE-2017-12219 is a high-severity denial of service vulnerability in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones, published on 21 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the handling of IP fragments for the Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to the inability to handle many large IP fragments for reassembly in a short duration. An attacker could exploit this vulnerability by sending a crafted stream of IP fragments to the targeted device. An exploit could allow the attacker to cause a DoS condition when the device unexpectedly reloads. Cisco Bug IDs: CSCve82586.

Weakness: CWE-399

## Which versions are affected by CVE-2017-12219?

It affects 11 products.


Products: Cisco Spa 301 Firmware, Cisco Spa 303 Firmware, Cisco Spa 500ds Firmware, Cisco Spa 500s Firmware, Cisco Spa 501g Firmware, Cisco Spa 502g Firmware, Cisco Spa 504g Firmware, Cisco Spa 508g Firmware, Cisco Spa 509g Firmware, Cisco Spa 512g Firmware, Cisco Spa 514g Firmware.

## How do I fix CVE-2017-12219?

No fix has been published for CVE-2017-12219 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12219 being exploited?

There is no known exploitation of CVE-2017-12219 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones

- [CVE-2024-20450](https://insights.sbomify.com/CVE-2024-20450/): Memory corruption in Cisco Small Business IP Phones (critical 9.8)
- [CVE-2024-20454](https://insights.sbomify.com/CVE-2024-20454/): Memory corruption in Cisco Small Business IP Phones (critical 9.8)
- [CVE-2024-20451](https://insights.sbomify.com/CVE-2024-20451/): Denial of service in Cisco Small Business IP Phones (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12219 and fix it if it is affected.

What it is: CVE-2017-12219 is a high-severity denial of service vulnerability in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones, published on 21 Sep 2017. 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-2017-12219 in the wild and no public exploit code.

Affected product: Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones. 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-2017-12219/ (Markdown: https://insights.sbomify.com/CVE-2017-12219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12219
- OSV: https://osv.dev/vulnerability/CVE-2017-12219

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-12219/
Summaries are generated and may contain mistakes; the official description above is the record.