# CVE-2018-0310: Information disclosure in Cisco FXOS and NX-OS unknown

> Unauthenticated remote attackers can send crafted packets to Cisco network devices to read sensitive memory or cause denial of service.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 Jun 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-hvrm-fpw8-36qp

## What is CVE-2018-0310?

CVE-2018-0310 is a critical vulnerability in Cisco Firepower Extensible Operating System, published on 21 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 Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to obtain sensitive information from memory or cause a denial of service (DoS) condition on the affected product. The vulnerability exists because the affected software insufficiently validates header values in Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overread condition, which could allow the attacker to obtain sensitive information from memory or cause a DoS condition on the affected product. This vulnerability affects Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd69957, CSCve02435, CSCve04859, CSCve41536, CSCve41538, CSCve41559.

Weakness: CWE-125 (Out-of-bounds Read), CWE-399

## Which versions are affected by CVE-2018-0310?

It affects 2 products.


Products: Cisco Firepower Extensible Operating System, Cisco Nx-Os.

## How do I fix CVE-2018-0310?

No fix has been published for CVE-2018-0310 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0310 being exploited?

There is no known exploitation of CVE-2018-0310 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Firepower Extensible Operating System

- [CVE-2015-6435](https://insights.sbomify.com/CVE-2015-6435/): Command injection in n/a (critical 9.8)
- [CVE-2021-1368](https://insights.sbomify.com/CVE-2021-1368/): Memory corruption in Cisco NX-OS Software (high 8.8)
- [CVE-2020-3456](https://insights.sbomify.com/CVE-2020-3456/): Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability (high 8.8)
- [CVE-2020-3172](https://insights.sbomify.com/CVE-2020-3172/): Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability (high 8.8)
- [CVE-2018-0395](https://insights.sbomify.com/CVE-2018-0395/): Cisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0310 and fix it if it is affected.

What it is: CVE-2018-0310 is a critical vulnerability in Cisco Firepower Extensible Operating System, published on 21 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-2018-0310 in the wild and no public exploit code.

Affected product: Cisco Firepower Extensible Operating System. 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-2018-0310/ (Markdown: https://insights.sbomify.com/CVE-2018-0310/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0310
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0310
- OSV: https://osv.dev/vulnerability/CVE-2018-0310

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0310/
Summaries are generated and may contain mistakes; the official description above is the record.