# CVE-2019-0265: XML external entity in ABAP Platform (KERNEL)

> An attacker can cause a denial of service in SAP ABAP Platform via SLD Registration, preventing legitimate users from accessing the service.

- **Severity:** Medium 4.9 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Feb 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5g9g-w9x5-3rfc

## What is CVE-2019-0265?

CVE-2019-0265 is a medium-severity vulnerability in SAP SE ABAP Platform (KERNEL), published on 15 Feb 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

SLD Registration of ABAP Platform allows an attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service. Fixed in versions KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT,KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49,KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49. 7.73 KERNEL from 7.21 to 7.22, 7.45, 7.49, 7.53, 7.73, 7.75.

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

## Which versions are affected by CVE-2019-0265?

It affects 5 products.


Products: Sap Advanced Business Application Programming Platform Kernel, Sap Advanced Business Application Programming Platform Krnl32nuc, Sap Advanced Business Application Programming Platform Krnl32uc, Sap Advanced Business Application Programming Platform Krnl64nuc, Sap Advanced Business Application Programming Platform Krnl64uc.

## How do I fix CVE-2019-0265?

No fix has been published for CVE-2019-0265 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-0265 being exploited?

There is no known exploitation of CVE-2019-0265 in the wild and no public exploit code.

## Other vulnerabilities in SAP SE ABAP Platform (KERNEL)

- [CVE-2019-0304](https://insights.sbomify.com/CVE-2019-0304/): Command injection in SAP NetWeaver AS ABAP Platform(KERNEL) (critical 9.8)
- [CVE-2019-0270](https://insights.sbomify.com/CVE-2019-0270/): Missing authorization in ABAP Platform & Server (KERNEL) (high 8.8)
- [CVE-2019-0255](https://insights.sbomify.com/CVE-2019-0255/): Privilege escalation in n/a (high 8.1)
- [CVE-2019-0349](https://insights.sbomify.com/CVE-2019-0349/): Missing authorization in SAP Kernel (KERNEL) (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-0265 and fix it if it is affected.

What it is: CVE-2019-0265 is a medium-severity vulnerability in SAP SE ABAP Platform (KERNEL), published on 15 Feb 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-0265 in the wild and no public exploit code.

Affected product: SAP SE ABAP Platform (KERNEL). 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-2019-0265/ (Markdown: https://insights.sbomify.com/CVE-2019-0265/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0265
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-0265
- OSV: https://osv.dev/vulnerability/CVE-2019-0265

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-0265/
Summaries are generated and may contain mistakes; the official description above is the record.