# CVE-2017-9353: Denial of service in n/a

> A flaw in the IPv6 dissector allows attackers to crash Wireshark by sending malformed IPv6 packets, requiring an upgrade to fix.

- **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:** Yes
- **Published:** 2 Jun 2017
- **Updated:** 5 Aug 2024
- **Also known as:** ALPINE-CVE-2017-9353, DEBIAN-CVE-2017-9353, GHSA-32qj-cm92-hg4r, UBUNTU-CVE-2017-9353

## What is CVE-2017-9353?

CVE-2017-9353 is a high-severity denial of service vulnerability in Wireshark Wireshark, published on 2 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Wireshark 2.2.0 to 2.2.6, the IPv6 dissector could crash. This was addressed in epan/dissectors/packet-ipv6.c by validating an IPv6 address.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-9353?

It affects 1 product.


Products: Wireshark Wireshark.

## How do I fix CVE-2017-9353?

Upgrade to a fixed version.

## Is CVE-2017-9353 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-9353 exists.

Public exploit code:

- Wireshark 2.2.6 - IPv6 Dissector Denial of Service (exploitdb)

## Other vulnerabilities in Wireshark Wireshark

- [CVE-2011-0444](https://insights.sbomify.com/CVE-2011-0444/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-2994](https://insights.sbomify.com/CVE-2010-2994/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-2995](https://insights.sbomify.com/CVE-2010-2995/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-1266](https://insights.sbomify.com/CVE-2009-1266/): Other in n/a (critical 10.0)
- [CVE-2009-1210](https://insights.sbomify.com/CVE-2009-1210/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-9353 and fix it if it is affected.

What it is: CVE-2017-9353 is a high-severity denial of service vulnerability in Wireshark Wireshark, published on 2 Jun 2017. 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-2017-9353 exists.

Affected product: Wireshark Wireshark. 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-2017-9353/ (Markdown: https://insights.sbomify.com/CVE-2017-9353/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-9353
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-9353
- OSV: https://osv.dev/vulnerability/CVE-2017-9353

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-9353/
Summaries are generated and may contain mistakes; the official description above is the record.