# CVE-2020-13484: Server-side request forgery in n/a

> An attacker can exploit a Server-Side Request Forgery vulnerability in Bitrix24 to access internal network resources via the URL preview feature.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jun 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7p89-xjg8-39jf

## What is CVE-2020-13484?

CVE-2020-13484 is a critical server-side request forgery vulnerability in n/a, published on 24 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Bitrix24 through 20.0.975 allows SSRF via an intranet IP address in the services/main/ajax.php?action=attachUrlPreview url parameter, if the destination URL hosts an HTML document containing '<meta name="og:image" content="' followed by an intranet URL.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2020-13484?

It affects 1 product.


Products: Bitrix24 Bitrix24.

## How do I fix CVE-2020-13484?

No fix has been published for CVE-2020-13484 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-13484 being exploited?

There is no known exploitation of CVE-2020-13484 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-27228](https://insights.sbomify.com/CVE-2022-27228/): Code injection in n/a (critical 9.8)
- [CVE-2023-1717](https://insights.sbomify.com/CVE-2023-1717/): Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution (critical 9.6)
- [CVE-2023-1720](https://insights.sbomify.com/CVE-2023-1720/): Bitrix24 Stored Cross-Site Scripting (XSS) via File Upload (critical 9.6)
- [CVE-2023-1715](https://insights.sbomify.com/CVE-2023-1715/): Bitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Edit Page (1 of 2) (critical 9.0)
- [CVE-2023-1716](https://insights.sbomify.com/CVE-2023-1716/): Bitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Edit Page (2 of 2) (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-13484 and fix it if it is affected.

What it is: CVE-2020-13484 is a critical server-side request forgery vulnerability in n/a, published on 24 Jun 2020. 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-2020-13484 in the wild and no public exploit code.

Affected product: n/a. 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-2020-13484/ (Markdown: https://insights.sbomify.com/CVE-2020-13484/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-13484
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-13484
- OSV: https://osv.dev/vulnerability/CVE-2020-13484

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-13484/
Summaries are generated and may contain mistakes; the official description above is the record.