# CVE-2017-12217: Denial of service in Cisco ASR 5500 System Architecture Evolution Gateway

> Remote unauthenticated attackers can cause a partial denial of service on Cisco ASR 5500 SAE Gateways by sending malformed GTP packets.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Sep 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8c25-vvg9-pf58

## What is CVE-2017-12217?

CVE-2017-12217 is a medium-severity denial of service vulnerability in Cisco ASR 5500 System Architecture Evolution Gateway, published on 7 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 General Packet Radio Service (GPRS) Tunneling Protocol ingress packet handler of Cisco ASR 5500 System Architecture Evolution (SAE) Gateways could allow an unauthenticated, remote attacker to cause a partial denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation of GPRS Tunneling Protocol packet headers. An attacker could exploit this vulnerability by sending a malformed GPRS Tunneling Protocol packet to an affected device. A successful exploit could allow the attacker to cause the GTPUMGR process on an affected device to restart unexpectedly, resulting in a partial DoS condition. If the GTPUMGR process restarts, there could be a brief impact on traffic passing through the device. Cisco Bug IDs: CSCve07119.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-12217?

It affects 1 product.


Products: Cisco Asr 5500 Firmware.

## How do I fix CVE-2017-12217?

No fix has been published for CVE-2017-12217 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12217 being exploited?

There is no known exploitation of CVE-2017-12217 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12217 and fix it if it is affected.

What it is: CVE-2017-12217 is a medium-severity denial of service vulnerability in Cisco ASR 5500 System Architecture Evolution Gateway, published on 7 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-2017-12217 in the wild and no public exploit code.

Affected product: Cisco ASR 5500 System Architecture Evolution Gateway. 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-2017-12217/ (Markdown: https://insights.sbomify.com/CVE-2017-12217/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12217
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12217
- OSV: https://osv.dev/vulnerability/CVE-2017-12217

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-12217/
Summaries are generated and may contain mistakes; the official description above is the record.