# CVE-2018-15403: Multiple Cisco Unified Communications Products Open Redirect Vulnerability

> Authenticated attackers can redirect users to malicious sites via improper input validation in Cisco Unified Communications web interfaces, facilitating phishing attacks.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Oct 2018
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-85vf-h2ww-rm2q

## What is CVE-2018-15403?

CVE-2018-15403 is a medium-severity vulnerability in Cisco Unified Communications Manager, published on 5 Oct 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability in the web interface of Cisco Emergency Responder, Cisco Unified Communications Manager, Cisco Unified Communications Manager IM & Presence Service, and Cisco Unity Connection could allow an authenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by crafting an HTTP request that causes the web interface to redirect a request to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2018-15403?

It affects 4 products.


Products: Cisco Emergency Responder, Cisco Unified Communications Manager, Cisco Unified Communications Manager Im and Presence Service, Cisco Unity Connection.

## How do I fix CVE-2018-15403?

No fix has been published for CVE-2018-15403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15403 being exploited?

There is no known exploitation of CVE-2018-15403 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Communications Manager

- [CVE-2008-1154](https://insights.sbomify.com/CVE-2008-1154/): Auth bypass in n/a (critical 10.0)
- [CVE-2023-20101](https://insights.sbomify.com/CVE-2023-20101/): Hardcoded credentials in Cisco Emergency Responder (critical 9.8)
- [CVE-2017-12337](https://insights.sbomify.com/CVE-2017-12337/): Hardcoded credentials in Cisco Voice Operating System (critical 9.8)
- [CVE-2016-6468](https://insights.sbomify.com/CVE-2016-6468/): Cross-site request forgery in Cisco Emergency Responder (high 8.8)
- [CVE-2023-20259](https://insights.sbomify.com/CVE-2023-20259/): Denial of service in Cisco Emergency Responder (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15403 and fix it if it is affected.

What it is: CVE-2018-15403 is a medium-severity vulnerability in Cisco Unified Communications Manager, published on 5 Oct 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-15403 in the wild and no public exploit code.

Affected product: Cisco Unified Communications Manager. 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-2018-15403/ (Markdown: https://insights.sbomify.com/CVE-2018-15403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15403
- OSV: https://osv.dev/vulnerability/CVE-2018-15403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15403/
Summaries are generated and may contain mistakes; the official description above is the record.