# CVE-1999-0746: Denial of service in n/a

> A remote attacker can cause a denial of service against SuSE Linux systems by exploiting the default 120-second delay in the identd service.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Mar 2000
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-868p-j55q-vf55

## What is CVE-1999-0746?

CVE-1999-0746 is a medium-severity denial of service vulnerability in Slackware Slackware Linux, published on 22 Mar 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A default configuration of in.identd in SuSE Linux waits 120 seconds between requests, allowing a remote attacker to conduct a denial of service.

## Which versions are affected by CVE-1999-0746?

It affects 2 products.


Products: Slackware Slackware Linux, Suse Suse Linux.

## How do I fix CVE-1999-0746?

No fix has been published for CVE-1999-0746 yet. Limit exposure of the affected software until one is available.

## Is CVE-1999-0746 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-0746 exists.

Public exploit code:

- SuSE Linux 6.2 / Slackware Linux 3.2/3.6 - 'identd' Denial of Service (exploitdb)

## Other vulnerabilities in Slackware Slackware Linux

- [CVE-2013-7171](https://insights.sbomify.com/CVE-2013-7171/): Misconfiguration in n/a (critical 9.8)
- [CVE-2013-7172](https://insights.sbomify.com/CVE-2013-7172/): Privilege escalation in n/a (high 7.8)
- [CVE-2003-0335](https://insights.sbomify.com/CVE-2003-0335/): Security feature bypass in n/a (high 7.5)
- [CVE-1999-0242](https://insights.sbomify.com/CVE-1999-0242/): Information disclosure in n/a (high 7.5)
- [CVE-1999-0298](https://insights.sbomify.com/CVE-1999-0298/): Path traversal in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-1999-0746 and fix it if it is affected.

What it is: CVE-1999-0746 is a medium-severity denial of service vulnerability in Slackware Slackware Linux, published on 22 Mar 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-0746 exists.

Affected product: Slackware Slackware Linux. 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-1999-0746/ (Markdown: https://insights.sbomify.com/CVE-1999-0746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-1999-0746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-1999-0746
- OSV: https://osv.dev/vulnerability/CVE-1999-0746

---
From sbomify Insights: https://insights.sbomify.com/CVE-1999-0746/
Summaries are generated and may contain mistakes; the official description above is the record.