# CVE-2018-0108: XML external entity in Cisco WebEx Meetings Server

> Unauthenticated remote attackers can exploit XXE injection to capture sensitive customer files and conduct reconnaissance.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **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-wpc5-5w3x-gfqh

## What is CVE-2018-0108?

CVE-2018-0108 is a medium-severity vulnerability in Cisco Webex Meetings Server, 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 Cisco WebEx Meetings Server could allow an unauthenticated, remote attacker to collect customer files via an out-of-band XML External Entity (XXE) injection. An attacker could exploit this vulnerability to gain information to conduct additional reconnaissance attacks. The vulnerability is due to the ability of an attacker to perform an out-of-band XXE injection on the system, which could allow an attacker to capture customer files and redirect them to another destination address. An exploit could allow the attacker to discover sensitive customer data. Cisco Bug IDs: CSCvg36996.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2018-0108?

It affects 1 product.


Products: Cisco Webex Meetings Server.

## How do I fix CVE-2018-0108?

No fix has been published for CVE-2018-0108 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0108 being exploited?

There is no known exploitation of CVE-2018-0108 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Webex Meetings Server

- [CVE-2017-12367](https://insights.sbomify.com/CVE-2017-12367/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)
- [CVE-2015-0589](https://insights.sbomify.com/CVE-2015-0589/): Command injection in n/a (critical 9.0)
- [CVE-2017-3794](https://insights.sbomify.com/CVE-2017-3794/): Cross-site request forgery in Cisco WebEx Meetings Server 2.6 (high 8.8)
- [CVE-2016-1448](https://insights.sbomify.com/CVE-2016-1448/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2016-1446](https://insights.sbomify.com/CVE-2016-1446/): SQL injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0108 and fix it if it is affected.

What it is: CVE-2018-0108 is a medium-severity vulnerability in Cisco Webex Meetings Server, 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-2018-0108 in the wild and no public exploit code.

Affected product: Cisco Webex Meetings Server. 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-2018-0108/ (Markdown: https://insights.sbomify.com/CVE-2018-0108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0108
- OSV: https://osv.dev/vulnerability/CVE-2018-0108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0108/
Summaries are generated and may contain mistakes; the official description above is the record.