# CVE-2020-12697: Denial of service in direct_mail

> An attacker can cause a denial of service by generating excessive log entries in the TYPO3 direct_mail extension.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 13 May 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5gm6-r79q-hfgw

## What is CVE-2020-12697?

CVE-2020-12697 is a medium-severity denial of service vulnerability in n/a, published on 13 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The direct_mail extension through 5.2.3 for TYPO3 allows Denial of Service via log entries.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2020-12697?

2 open source packages ship an affected version, including directmailteam/direct-mail. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `directmailteam/direct-mail` | Packagist | All versions | 5.2.4 |
| `directmailteam/direct-mail` | Packagist | All versions | 5.2.4 |

Products: Dkd Direct Mail.

## How do I fix CVE-2020-12697?

Upgrade directmailteam/direct-mail to 5.2.4 or later.

## Is CVE-2020-12697 being exploited?

There is no known exploitation of CVE-2020-12697 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2013-7400](https://insights.sbomify.com/CVE-2013-7400/): The Direct Mail (direct_mail) TYPO3 extension improperly discloses sensitive information (high 7.5)
- [CVE-2020-12699](https://insights.sbomify.com/CVE-2020-12699/): Open redirect in direct_mail (medium 6.1)
- [CVE-2020-12698](https://insights.sbomify.com/CVE-2020-12698/): Missing Authorization in TYPO3 extension (medium 4.3)
- [CVE-2020-12700](https://insights.sbomify.com/CVE-2020-12700/): Missing Authorization in TYPO3 extension (medium 4.3)
- [CVE-2019-16698](https://insights.sbomify.com/CVE-2019-16698/): direct_mail for Typo3 sensitive data exposure (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12697 and fix it if it is affected.

What it is: CVE-2020-12697 is a medium-severity denial of service vulnerability in n/a, published on 13 May 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-2020-12697 in the wild and no public exploit code.

Affected packages and fixed versions:
- directmailteam/direct-mail (Packagist): affected all versions; fixed in 5.2.4
- directmailteam/direct-mail (Packagist): affected all versions; fixed in 5.2.4

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-2020-12697/ (Markdown: https://insights.sbomify.com/CVE-2020-12697/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12697
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12697
- OSV: https://osv.dev/vulnerability/CVE-2020-12697

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-12697/
Summaries are generated and may contain mistakes; the official description above is the record.