# CVE-2017-3811: XML external entity in Cisco WebEx Meetings Server

> An authenticated remote attacker can exploit an XML External Entity vulnerability to read sensitive information from the Cisco WebEx Meetings Server.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Mar 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-52pr-5rrw-jrw9

## What is CVE-2017-3811?

CVE-2017-3811 is a medium-severity vulnerability in Cisco Webex Meetings Server, published on 17 Mar 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An XML External Entity vulnerability in Cisco WebEx Meetings Server could allow an authenticated, remote attacker to have read access to part of the information stored in the affected system. More Information: CSCvc39165. Known Affected Releases: 2.6. Known Fixed Releases: 2.7.1.2054.

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

## Which versions are affected by CVE-2017-3811?

It affects 1 product.


Products: Cisco Webex Meetings Server.

## How do I fix CVE-2017-3811?

No fix has been published for CVE-2017-3811 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-3811 being exploited?

There is no known exploitation of CVE-2017-3811 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-2017-3811 and fix it if it is affected.

What it is: CVE-2017-3811 is a medium-severity vulnerability in Cisco Webex Meetings Server, published on 17 Mar 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-3811 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-2017-3811/ (Markdown: https://insights.sbomify.com/CVE-2017-3811/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-3811
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-3811
- OSV: https://osv.dev/vulnerability/CVE-2017-3811

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-3811/
Summaries are generated and may contain mistakes; the official description above is the record.