# CVE-2019-4513: XML external entity in Security Access Manager for Enterprise Single Sign-On

> Remote attackers can exploit XML External Entity injection in IBM Security Access Manager to expose sensitive information or cause denial of service.

- **Severity:** High 8.2 (`CVSS:3.0/AC:L/A:L/PR:N/I:N/S:U/UI:N/C:H/AV:N/RL:O/RC:C/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Aug 2019
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-927c-c24q-w7gx

## What is CVE-2019-4513?

CVE-2019-4513 is a high-severity vulnerability in IBM Security Access Manager for Enterprise Single Sign-On, published on 26 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Security Access Manager for Enterprise Single Sign-On 8.2.2 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 164555.

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

## Which versions are affected by CVE-2019-4513?

It affects 1 product.


Products: Ibm Security Access Manager for Enterprise Single Sign-On.

## How do I fix CVE-2019-4513?

No fix has been published for CVE-2019-4513 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-4513 being exploited?

There is no known exploitation of CVE-2019-4513 in the wild and no public exploit code.

## Other vulnerabilities in IBM Security Access Manager for Enterprise Single Sign-On

- [CVE-2017-1732](https://insights.sbomify.com/CVE-2017-1732/): Information disclosure in Security Access Manager for Enterprise Single Sign-On (medium 4.3)
- [CVE-2013-5421](https://insights.sbomify.com/CVE-2013-5421/): Cross-site scripting in n/a (medium 4.3)
- [CVE-2013-5420](https://insights.sbomify.com/CVE-2013-5420/): Information disclosure in n/a (low 3.5)
- [CVE-2013-6745](https://insights.sbomify.com/CVE-2013-6745/): Cross-site scripting in n/a (low 3.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-4513 and fix it if it is affected.

What it is: CVE-2019-4513 is a high-severity vulnerability in IBM Security Access Manager for Enterprise Single Sign-On, published on 26 Aug 2019. 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-2019-4513 in the wild and no public exploit code.

Affected product: IBM Security Access Manager for Enterprise Single Sign-On. 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-2019-4513/ (Markdown: https://insights.sbomify.com/CVE-2019-4513/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-4513
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-4513
- OSV: https://osv.dev/vulnerability/CVE-2019-4513

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-4513/
Summaries are generated and may contain mistakes; the official description above is the record.