# CVE-2017-8913: XML external entity in n/a

> Authenticated attackers can exploit an XML External Entity vulnerability in SAP NetWeaver to read sensitive data or cause denial of service.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 23 May 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8wp6-p535-q4m3

## What is CVE-2017-8913?

CVE-2017-8913 is a high-severity vulnerability in Sap Netweaver Application Server Java, published on 23 May 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Visual Composer VC70RUNTIME component in SAP NetWeaver AS JAVA 7.5 allows remote authenticated users to conduct XML External Entity (XXE) attacks via a crafted XML document in a request to irj/servlet/prt/portal/prtroot/com.sap.visualcomposer.BIKit.default, aka SAP Security Note 2386873.

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

## Which versions are affected by CVE-2017-8913?

It affects 1 product.


Products: Sap Netweaver Application Server Java.

## How do I fix CVE-2017-8913?

No fix has been published for CVE-2017-8913 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-8913 being exploited?

There is no known exploitation of CVE-2017-8913 in the wild and no public exploit code.

## Other vulnerabilities in Sap Netweaver Application Server Java

- [CVE-2020-6287](https://insights.sbomify.com/CVE-2020-6287/): SAP NetWeaver Missing Authentication for Critical Function (critical 10.0, exploited in the wild)
- [CVE-2010-5326](https://insights.sbomify.com/CVE-2010-5326/): SAP NetWeaver Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2016-2386](https://insights.sbomify.com/CVE-2016-2386/): SAP NetWeaver SQL Injection (critical 9.8, exploited in the wild)
- [CVE-2017-12637](https://insights.sbomify.com/CVE-2017-12637/): SAP NetWeaver Directory Traversal (high 7.5, exploited in the wild)
- [CVE-2016-3976](https://insights.sbomify.com/CVE-2016-3976/): SAP NetWeaver Directory Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-8913 and fix it if it is affected.

What it is: CVE-2017-8913 is a high-severity vulnerability in Sap Netweaver Application Server Java, published on 23 May 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-2017-8913 in the wild and no public exploit code.

Affected product: Sap Netweaver Application Server Java. 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-2017-8913/ (Markdown: https://insights.sbomify.com/CVE-2017-8913/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-8913
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-8913
- OSV: https://osv.dev/vulnerability/CVE-2017-8913

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-8913/
Summaries are generated and may contain mistakes; the official description above is the record.