# CVE-2018-0086: Denial of service in Cisco Unified Customer Voice Portal

> Unauthenticated remote attackers can cause a denial of service on Cisco Unified Customer Voice Portal by sending malformed SIP INVITE traffic.

- **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:** 18 Jan 2018
- **Updated:** 2 Dec 2024
- **Also known as:** GHSA-7j8f-w9cg-569r

## What is CVE-2018-0086?

CVE-2018-0086 is a high-severity denial of service vulnerability in Cisco Unified Customer Voice Portal, published on 18 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the application server of the Cisco Unified Customer Voice Portal (CVP) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to malformed SIP INVITE traffic received on the CVP during communications with the Cisco Virtualized Voice Browser (VVB). An attacker could exploit this vulnerability by sending malformed SIP INVITE traffic to the targeted appliance. An exploit could allow the attacker to impact the availability of services and data on the device, causing a DoS condition. This vulnerability affects Cisco Unified CVP running any software release prior to 11.6(1). Cisco Bug IDs: CSCve85840.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2018-0086?

It affects 1 product.


Products: Cisco Unified Customer Voice Portal.

## How do I fix CVE-2018-0086?

No fix has been published for CVE-2018-0086 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0086 being exploited?

There is no known exploitation of CVE-2018-0086 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Customer Voice Portal

- [CVE-2013-1221](https://insights.sbomify.com/CVE-2013-1221/): Misconfiguration in n/a (critical 10.0)
- [CVE-2008-2053](https://insights.sbomify.com/CVE-2008-2053/): Privilege escalation in n/a (critical 9.0)
- [CVE-2017-12214](https://insights.sbomify.com/CVE-2017-12214/): Privilege escalation in Cisco Unified Customer Voice Portal (high 8.8)
- [CVE-2018-0139](https://insights.sbomify.com/CVE-2018-0139/): Denial of service in Cisco Unified Customer Voice Portal (high 8.6)
- [CVE-2013-1220](https://insights.sbomify.com/CVE-2013-1220/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0086 and fix it if it is affected.

What it is: CVE-2018-0086 is a high-severity denial of service vulnerability in Cisco Unified Customer Voice Portal, published on 18 Jan 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-2018-0086 in the wild and no public exploit code.

Affected product: Cisco Unified Customer Voice Portal. 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-2018-0086/ (Markdown: https://insights.sbomify.com/CVE-2018-0086/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0086
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0086
- OSV: https://osv.dev/vulnerability/CVE-2018-0086

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0086/
Summaries are generated and may contain mistakes; the official description above is the record.